diff --git a/wp-admin/comment.php b/wp-admin/comment.php
index 6c0872d475..eee6a12fa0 100644
--- a/wp-admin/comment.php
+++ b/wp-admin/comment.php
@@ -39,7 +39,7 @@ case 'mac':
 	$nonce_action = 'cdc' == $action ? 'delete-comment_' : 'approve-comment_';
 	$nonce_action .= $comment;
 
-	if ( ! $comment = get_comment($comment) )
+	if ( ! $comment = get_comment_to_edit($comment) )
 		wp_die(__('Oops, no comment with this ID.').sprintf(' <a href="%s">'.__('Go back').'</a>!', 'edit.php'));
 
 	if ( !current_user_can('edit_post', $comment->comment_post_ID) )
@@ -91,12 +91,12 @@ case 'mac':
 <?php if ( $comment->comment_author_url ) { ?>
 <tr>
 <th scope="row"><?php _e('URL:'); ?></th>
-<td><?php echo "<a href='$comment->comment_author_url'>$comment->comment_author_url</a>"; ?></td>
+<td><a href='<?php echo $comment->comment_author_url; ?>'><?php echo $comment->comment_author_url; ?></a></td>
 </tr>
 <?php } ?>
 <tr>
 <th scope="row" valign="top"><p><?php _e('Comment:'); ?></p></th>
-<td><?php echo apply_filters( 'comment_text', $comment->comment_content ); ?></td>
+<td><?php echo $comment->comment_content; ?></td>
 </tr>
 </table>
 
@@ -155,7 +155,7 @@ case 'unapprovecomment':
 	if ((wp_get_referer() != "") && (false == $noredir)) {
 		wp_redirect(wp_get_referer());
 	} else {
-		wp_redirect(get_option('siteurl') .'/wp-admin/edit.php?p='.$comment->comment_post_ID.'&c=1#comments');
+		wp_redirect(get_option('siteurl') .'/wp-admin/edit.php?p=' . (int) $comment->comment_post_ID.'&c=1#comments');
 	}
 	exit();
 	break;
@@ -185,7 +185,7 @@ case 'approvecomment':
 	if ((wp_get_referer() != "") && (false == $noredir)) {
 		wp_redirect(wp_get_referer());
 	} else {
-		wp_redirect(get_option('siteurl') .'/wp-admin/edit.php?p='.$comment->comment_post_ID.'&c=1#comments');
+		wp_redirect(get_option('siteurl') .'/wp-admin/edit.php?p=' . (int) $comment->comment_post_ID.'&c=1#comments');
 	}
 	exit();
 	break;
diff --git a/wp-admin/edit-form-advanced.php b/wp-admin/edit-form-advanced.php
index 74af0c0a8c..f3edaa530e 100644
--- a/wp-admin/edit-form-advanced.php
+++ b/wp-admin/edit-form-advanced.php
@@ -1,10 +1,12 @@
 <?php
+if ( isset($_GET['message']) )
+	$_GET['message'] = (int) $_GET['message'];
 $messages[1] = __('Post updated');
 $messages[2] = __('Custom field updated');
 $messages[3] = __('Custom field deleted.');
 ?>
 <?php if (isset($_GET['message'])) : ?>
-<div id="message" class="updated fade"><p><?php echo $messages[$_GET['message']]; ?></p></div>
+<div id="message" class="updated fade"><p><?php echo wp_specialchars($messages[$_GET['message']]); ?></p></div>
 <?php endif; ?>
 
 <form name="post" action="post.php" method="post" id="post">
@@ -21,16 +23,17 @@ if (0 == $post_ID) {
 	$form_extra = "<input type='hidden' id='post_ID' name='temp_ID' value='$temp_ID' />";
 	wp_nonce_field('add-post');
 } else {
+	$post_ID = (int) $post_ID;
 	$form_action = 'editpost';
 	$form_extra = "<input type='hidden' id='post_ID' name='post_ID' value='$post_ID' />";
 	wp_nonce_field('update-post_' .  $post_ID);
 }
 
-$form_pingback = '<input type="hidden" name="post_pingback" value="' . get_option('default_pingback_flag') . '" id="post_pingback" />';
+$form_pingback = '<input type="hidden" name="post_pingback" value="' . (int) get_option('default_pingback_flag') . '" id="post_pingback" />';
 
-$form_prevstatus = '<input type="hidden" name="prev_status" value="' . $post->post_status . '" />';
+$form_prevstatus = '<input type="hidden" name="prev_status" value="' . attribute_escape( $post->post_status ) . '" />';
 
-$form_trackback = '<input type="text" name="trackback_url" style="width: 415px" id="trackback" tabindex="7" value="'. str_replace("\n", ' ', $post->to_ping) .'" />';
+$form_trackback = '<input type="text" name="trackback_url" style="width: 415px" id="trackback" tabindex="7" value="'. attribute_escape( str_replace("\n", ' ', $post->to_ping) ) .'" />';
 
 if ('' != $post->pinged) {
 	$pings = '<p>'. __('Already pinged:') . '</p><ul>';
@@ -41,16 +44,16 @@ if ('' != $post->pinged) {
 	$pings .= '</ul>';
 }
 
-$saveasdraft = '<input name="save" type="submit" id="save" tabindex="3" value="' . __('Save and Continue Editing') . '" />';
+$saveasdraft = '<input name="save" type="submit" id="save" tabindex="3" value="' . attribute_escape( __('Save and Continue Editing') ) . '" />';
 
 if (empty($post->post_status)) $post->post_status = 'draft';
 
 ?>
 
-<input type="hidden" name="user_ID" value="<?php echo $user_ID ?>" />
+<input type="hidden" name="user_ID" value="<?php echo (int) $user_ID ?>" />
 <input type="hidden" id="hiddenaction" name="action" value="<?php echo $form_action ?>" />
 <input type="hidden" id="originalaction" name="originalaction" value="<?php echo $form_action ?>" />
-<input type="hidden" name="post_author" value="<?php echo $post->post_author ?>" />
+<input type="hidden" name="post_author" value="<?php echo attribute_escape( $post->post_author ); ?>" />
 <input type="hidden" id="post_type" name="post_type" value="post" />
 
 <?php echo $form_extra ?>
@@ -88,12 +91,12 @@ addLoadEvent(focusit);
 
 <fieldset id="passworddiv" class="dbx-box">
 <h3 class="dbx-handle"><?php _e('Post Password') ?></h3> 
-<div class="dbx-content"><input name="post_password" type="text" size="13" id="post_password" value="<?php echo $post->post_password ?>" /></div>
+<div class="dbx-content"><input name="post_password" type="text" size="13" id="post_password" value="<?php echo attribute_escape( $post->post_password ); ?>" /></div>
 </fieldset>
 
 <fieldset id="slugdiv" class="dbx-box">
 <h3 class="dbx-handle"><?php _e('Post Slug') ?></h3> 
-<div class="dbx-content"><input name="post_name" type="text" size="13" id="post_name" value="<?php echo $post->post_name ?>" /></div>
+<div class="dbx-content"><input name="post_name" type="text" size="13" id="post_name" value="<?php echo attribute_escape( $post->post_name ); ?>" /></div>
 </fieldset>
 
 <fieldset id="poststatusdiv" class="dbx-box">
@@ -125,7 +128,7 @@ foreach ($authors as $o) :
 $o = get_userdata( $o->ID );
 if ( $post->post_author == $o->ID || ( empty($post_ID) && $user_ID == $o->ID ) ) $selected = 'selected="selected"';
 else $selected = '';
-echo "<option value='$o->ID' $selected>$o->display_name</option>";
+echo "<option value='" . (int) $o->ID . "' $selected>" . wp_specialchars( $o->display_name ) . "</option>";
 endforeach;
 ?>
 </select>
@@ -140,7 +143,7 @@ endforeach;
 
 <fieldset id="titlediv">
 	<legend><?php _e('Title') ?></legend>
-	<div><input type="text" name="post_title" size="30" tabindex="1" value="<?php echo $post->post_title; ?>" id="title" /></div>
+	<div><input type="text" name="post_title" size="30" tabindex="1" value="<?php echo attribute_escape($post->post_title); ?>" id="title" /></div>
 </fieldset>
 
 <fieldset id="<?php echo user_can_richedit() ? 'postdivrich' : 'postdiv'; ?>">
@@ -167,7 +170,7 @@ endforeach;
 <p class="submit">
 <span id="autosave"></span>
 <?php echo $saveasdraft; ?>
-<input type="submit" name="submit" value="<?php _e('Save') ?>" style="font-weight: bold;" tabindex="4" /> 
+<input type="submit" name="submit" value="<?php _e('Save'); ?>" style="font-weight: bold;" tabindex="4" /> 
 <?php 
 if ('publish' != $post->post_status || 0 == $post_ID) {
 ?>
@@ -190,7 +193,7 @@ else
 
 <?php
 if (current_user_can('upload_files')) {
-	$uploading_iframe_ID = (0 == $post_ID ? $temp_ID : $post_ID);
+	$uploading_iframe_ID = (int) (0 == $post_ID ? $temp_ID : $post_ID);
 	$uploading_iframe_src = wp_nonce_url("upload.php?style=inline&amp;tab=upload&amp;post_id=$uploading_iframe_ID", 'inlineuploading');
 	$uploading_iframe_src = apply_filters('uploading_iframe_src', $uploading_iframe_src);
 	if ( false != $uploading_iframe_src )
diff --git a/wp-admin/edit-form-comment.php b/wp-admin/edit-form-comment.php
index 3e278bcfe6..5d6f448007 100644
--- a/wp-admin/edit-form-comment.php
+++ b/wp-admin/edit-form-comment.php
@@ -2,13 +2,13 @@
 $submitbutton_text = __('Edit Comment &raquo;');
 $toprow_title = sprintf(__('Editing Comment # %s'), $comment->comment_ID);
 $form_action = 'editedcomment';
-$form_extra = "' />\n<input type='hidden' name='comment_ID' value='" . $comment->comment_ID . "' />\n<input type='hidden' name='comment_post_ID' value='".$comment->comment_post_ID;
+$form_extra = "' />\n<input type='hidden' name='comment_ID' value='" . $comment->comment_ID . "' />\n<input type='hidden' name='comment_post_ID' value='" . $comment->comment_post_ID;
 ?>
 
 <form name="post" action="comment.php" method="post" id="post">
 <?php wp_nonce_field('update-comment_' . $comment->comment_ID) ?>
 <div class="wrap">
-<input type="hidden" name="user_ID" value="<?php echo $user_ID ?>" />
+<input type="hidden" name="user_ID" value="<?php echo (int) $user_ID ?>" />
 <input type="hidden" name="action" value='<?php echo $form_action . $form_extra ?>' />
 
 <script type="text/javascript">
@@ -20,19 +20,19 @@ addLoadEvent(focusit);
 <fieldset id="namediv">
     <legend><label for="name"><?php _e('Name:') ?></label></legend>
 	<div>
-	  <input type="text" name="newcomment_author" size="25" value="<?php echo $comment->comment_author ?>" tabindex="1" id="name" />
+	  <input type="text" name="newcomment_author" size="25" value="<?php echo attribute_escape( $comment->comment_author ); ?>" tabindex="1" id="name" />
     </div>
 </fieldset>
 <fieldset id="emaildiv">
         <legend><label for="email"><?php _e('E-mail:') ?></label></legend>
 		<div>
-		  <input type="text" name="newcomment_author_email" size="20" value="<?php echo $comment->comment_author_email ?>" tabindex="2" id="email" />
+		  <input type="text" name="newcomment_author_email" size="20" value="<?php echo attribute_escape( $comment->comment_author_email ); ?>" tabindex="2" id="email" />
     </div>
 </fieldset>
 <fieldset id="uridiv">
         <legend><label for="newcomment_author_url"><?php _e('URL:') ?></label></legend>
 		<div>
-		  <input type="text" id="newcomment_author_url" name="newcomment_author_url" size="35" value="<?php echo $comment->comment_author_url ?>" tabindex="3" />
+		  <input type="text" id="newcomment_author_url" name="newcomment_author_url" size="35" value="<?php echo attribute_escape( $comment->comment_author_url ); ?>" tabindex="3" />
     </div>
 </fieldset>
 
diff --git a/wp-admin/edit-form.php b/wp-admin/edit-form.php
index 8ed3d54374..3945e3c3c2 100644
--- a/wp-admin/edit-form.php
+++ b/wp-admin/edit-form.php
@@ -6,7 +6,7 @@
 <?php if (isset($mode) && 'bookmarklet' == $mode) : ?>
 <input type="hidden" name="mode" value="bookmarklet" />
 <?php endif; ?>
-<input type="hidden" name="user_ID" value="<?php echo $user_ID ?>" />
+<input type="hidden" name="user_ID" value="<?php echo (int) $user_ID ?>" />
 <input type="hidden" name="action" value='post' />
 
 <script type="text/javascript">
@@ -21,7 +21,7 @@ addLoadEvent(focusit);
 <div id="poststuff">
     <fieldset id="titlediv">
       <legend><a href="http://wordpress.org/docs/reference/post/#title" title="<?php _e('Help on titles') ?>"><?php _e('Title') ?></a></legend> 
-	  <div><input type="text" name="post_title" size="30" tabindex="1" value="<?php echo $post->post_title; ?>" id="title" /></div>
+	  <div><input type="text" name="post_title" size="30" tabindex="1" value="<?php echo attribute_escape( $post->post_title ); ?>" id="title" /></div>
     </fieldset>
 
     <fieldset id="categorydiv">
@@ -49,7 +49,7 @@ edCanvas = document.getElementById('content');
 //-->
 </script>
 
-<input type="hidden" name="post_pingback" value="<?php echo get_option('default_pingback_flag') ?>" id="post_pingback" />
+<input type="hidden" name="post_pingback" value="<?php echo (int) get_option('default_pingback_flag') ?>" id="post_pingback" />
 
 <p><label for="trackback"> <?php printf(__('<a href="%s" title="Help on trackbacks"><strong>TrackBack</strong> a <abbr title="Universal Resource Locator">URL</abbr></a>:</label> (Separate multiple <abbr title="Universal Resource Locator">URL</abbr>s with spaces.)'), 'http://wordpress.org/docs/reference/post/#trackback'); echo '<br />'; ?>
 	<input type="text" name="trackback_url" style="width: 360px" id="trackback" tabindex="7" /></p>
@@ -64,7 +64,7 @@ edCanvas = document.getElementById('content');
 <?php if ('bookmarklet' != $mode) {
 		echo '<input name="advanced" type="submit" id="advancededit" tabindex="7" value="' .  __('Advanced Editing &raquo;') . '" />';
 	} ?>
-	<input name="referredby" type="hidden" id="referredby" value="<?php if ( wp_get_referer() ) echo urlencode(wp_get_referer()); ?>" />
+	<input name="referredby" type="hidden" id="referredby" value="<?php if ( $refby = wp_get_referer() ) echo urlencode($refby); ?>" />
 </p>
 
 <?php do_action('simple_edit_form', ''); ?>
diff --git a/wp-admin/edit-page-form.php b/wp-admin/edit-page-form.php
index f7083fd077..e3a039ebb2 100644
--- a/wp-admin/edit-page-form.php
+++ b/wp-admin/edit-page-form.php
@@ -2,17 +2,22 @@
 <div class="wrap">
 <h2 id="write-post"><?php _e('Write Page'); ?></h2>
 <?php
+
 if (0 == $post_ID) {
 	$form_action = 'post';
 	$nonce_action = 'add-page';
 	$temp_ID = -1 * time(); // don't change this formula without looking at wp_write_post()
 	$form_extra = "<input type='hidden' id='post_ID' name='temp_ID' value='$temp_ID' />";
 } else {
+	$post_ID = (int) $post_ID;
 	$form_action = 'editpost';
 	$nonce_action = 'update-page_' . $post_ID;
 	$form_extra = "<input type='hidden' id='post_ID' name='post_ID' value='$post_ID' />";
 }
 
+$temp_ID = (int) $temp_ID;
+$user_ID = (int) $user_ID;
+
 $sendto = clean_url(stripslashes(wp_get_referer()));
 
 if ( 0 != $post_ID && $sendto == get_permalink($post_ID) )
@@ -68,7 +73,7 @@ addLoadEvent(focusit);
 
 <fieldset id="passworddiv" class="dbx-box">
 <h3 class="dbx-handle"><?php _e('Page Password') ?></h3>
-<div class="dbx-content"><input name="post_password" type="text" size="13" id="post_password" value="<?php echo $post->post_password ?>" /></div>
+<div class="dbx-content"><input name="post_password" type="text" size="13" id="post_password" value="<?php echo attribute_escape( $post->post_password ); ?>" /></div>
 </fieldset>
 
 <fieldset id="pageparent" class="dbx-box">
@@ -93,7 +98,7 @@ addLoadEvent(focusit);
 
 <fieldset id="slugdiv" class="dbx-box">
 <h3 class="dbx-handle"><?php _e('Page Slug') ?></h3>
-<div class="dbx-content"><input name="post_name" type="text" size="13" id="post_name" value="<?php echo $post->post_name ?>" /></div>
+<div class="dbx-content"><input name="post_name" type="text" size="13" id="post_name" value="<?php echo attribute_escape( $post->post_name ); ?>" /></div>
 </fieldset>
 
 <?php if ( $authors = get_editable_authors( $current_user->id ) ) : // TODO: ROLE SYSTEM ?>
@@ -106,6 +111,8 @@ foreach ($authors as $o) :
 $o = get_userdata( $o->ID );
 if ( $post->post_author == $o->ID || ( empty($post_ID) && $user_ID == $o->ID ) ) $selected = 'selected="selected"';
 else $selected = '';
+$o->ID = (int) $o->ID;
+$o->display_name = wp_specialchars( $o->display_name );
 echo "<option value='$o->ID' $selected>$o->display_name</option>";
 endforeach;
 ?>
@@ -126,7 +133,7 @@ endforeach;
 
 <fieldset id="titlediv">
   <legend><?php _e('Page Title') ?></legend>
-  <div><input type="text" name="post_title" size="30" tabindex="1" value="<?php echo $post->post_title; ?>" id="title" /></div>
+  <div><input type="text" name="post_title" size="30" tabindex="1" value="<?php echo attribute_escape( $post->post_title ); ?>" id="title" /></div>
 </fieldset>
 
 
diff --git a/wp-admin/includes/comment.php b/wp-admin/includes/comment.php
index 94def91f96..5f55f7aade 100644
--- a/wp-admin/includes/comment.php
+++ b/wp-admin/includes/comment.php
@@ -43,11 +43,16 @@ function edit_comment() {
 function get_comment_to_edit( $id ) {
 	$comment = get_comment( $id );
 
+	$comment->comment_ID = (int) $comment->comment_ID;
+	$comment->comment_post_ID = (int) $comment->comment_post_ID;
+
 	$comment->comment_content = format_to_edit( $comment->comment_content, user_can_richedit() );
 	$comment->comment_content = apply_filters( 'comment_edit_pre', $comment->comment_content);
+	$comment->comment_content = apply_filters( 'comment_text', $comment->comment_content );
 
 	$comment->comment_author = format_to_edit( $comment->comment_author );
 	$comment->comment_author_email = format_to_edit( $comment->comment_author_email );
+	$comment->comment_author_url = clean_url($comment->comment_author_url);
 	$comment->comment_author_url = format_to_edit( $comment->comment_author_url );
 
 	return $comment;
diff --git a/wp-admin/includes/post.php b/wp-admin/includes/post.php
index fdf73c58cc..588be7fb08 100644
--- a/wp-admin/includes/post.php
+++ b/wp-admin/includes/post.php
@@ -174,6 +174,8 @@ function get_post_to_edit( $id ) {
 
 	$post->post_password = format_to_edit( $post->post_password );
 
+	$post->menu_order = (int) $post->menu_order;
+
 	if ( $post->post_type == 'page' )
 		$post->page_template = get_post_meta( $id, '_wp_page_template', true );
 
diff --git a/wp-admin/includes/taxonomy.php b/wp-admin/includes/taxonomy.php
index 268bd0d8e2..2f04328b89 100644
--- a/wp-admin/includes/taxonomy.php
+++ b/wp-admin/includes/taxonomy.php
@@ -11,6 +11,9 @@ function category_exists($cat_name) {
 function get_category_to_edit( $id ) {
 	$category = get_category( $id );
 
+	$category->term_id = (int) $category->term_id;
+	$category->parent = (int) $category->parent;
+
 	return $category;
 }
 
diff --git a/wp-admin/includes/template.php b/wp-admin/includes/template.php
index 54ecb1be52..115741b5f9 100644
--- a/wp-admin/includes/template.php
+++ b/wp-admin/includes/template.php
@@ -354,6 +354,7 @@ function list_meta( $meta ) {
 		$key_js = js_escape( $entry['meta_key'] );
 		$entry['meta_key']   = attribute_escape($entry['meta_key']);
 		$entry['meta_value'] = attribute_escape($entry['meta_value']);
+		$entry['meta_id'] = (int) $entry['meta_id'];
 		$r .= "\n\t<tr id='meta-{$entry['meta_id']}' class='$style'>";
 		$r .= "\n\t\t<td valign='top'><input name='meta[{$entry['meta_id']}][key]' tabindex='6' type='text' size='20' value='{$entry['meta_key']}' /></td>";
 		$r .= "\n\t\t<td><textarea name='meta[{$entry['meta_id']}][value]' tabindex='6' rows='2' cols='30'>{$entry['meta_value']}</textarea></td>";
@@ -393,7 +394,7 @@ function meta_form() {
 <?php
 
 	foreach ( $keys as $key ) {
-		$key = attribute_escape( $key);
+		$key = attribute_escape( $key );
 		echo "\n\t<option value='$key'>$key</option>";
 	}
 ?>