diff --git a/config/src/main/java/org/springframework/security/config/authentication/UserServiceBeanDefinitionParser.java b/config/src/main/java/org/springframework/security/config/authentication/UserServiceBeanDefinitionParser.java
index e3ccf386f4..120c23cb77 100644
--- a/config/src/main/java/org/springframework/security/config/authentication/UserServiceBeanDefinitionParser.java
+++ b/config/src/main/java/org/springframework/security/config/authentication/UserServiceBeanDefinitionParser.java
@@ -24,6 +24,7 @@ import org.w3c.dom.Element;
  * @author Luke Taylor
  * @author Ben Alex
  */
+@SuppressWarnings("deprecation")
 public class UserServiceBeanDefinitionParser extends AbstractUserDetailsServiceBeanDefinitionParser {
 
     static final String ATT_PASSWORD = "password";
@@ -90,7 +91,7 @@ public class UserServiceBeanDefinitionParser extends AbstractUserDetailsServiceB
             user.addConstructorArgValue(!locked);
             user.addConstructorArgValue(authorities.getBeanDefinition());
 
-            users.put(userName, user.getBeanDefinition());
+            users.put(userName.toLowerCase(), user.getBeanDefinition());
         }
 
         userMap.getPropertyValues().addPropertyValue("users", users);
diff --git a/config/src/test/java/org/springframework/security/config/authentication/UserServiceBeanDefinitionParserTests.java b/config/src/test/java/org/springframework/security/config/authentication/UserServiceBeanDefinitionParserTests.java
index 703647e12b..a006d98df7 100644
--- a/config/src/test/java/org/springframework/security/config/authentication/UserServiceBeanDefinitionParserTests.java
+++ b/config/src/test/java/org/springframework/security/config/authentication/UserServiceBeanDefinitionParserTests.java
@@ -77,12 +77,12 @@ public class UserServiceBeanDefinitionParserTests {
         setContext(
                 "<user-service id='service'>" +
                 "    <user name='joe' password='joespassword' authorities='ROLE_A' locked='true'/>" +
-                "    <user name='bob' password='bobspassword' authorities='ROLE_A' disabled='true'/>" +
+                "    <user name='Bob' password='bobspassword' authorities='ROLE_A' disabled='true'/>" +
                 "</user-service>");
         UserDetailsService userService = (UserDetailsService) appContext.getBean("service");
         UserDetails joe = userService.loadUserByUsername("joe");
         assertFalse(joe.isAccountNonLocked());
-        UserDetails bob = userService.loadUserByUsername("bob");
+        UserDetails bob = userService.loadUserByUsername("bOb");
         assertFalse(bob.isEnabled());
     }
 
diff --git a/core/src/main/java/org/springframework/security/core/userdetails/memory/InMemoryDaoImpl.java b/core/src/main/java/org/springframework/security/core/userdetails/memory/InMemoryDaoImpl.java
index 194ad1acfd..6fcb5453e7 100644
--- a/core/src/main/java/org/springframework/security/core/userdetails/memory/InMemoryDaoImpl.java
+++ b/core/src/main/java/org/springframework/security/core/userdetails/memory/InMemoryDaoImpl.java
@@ -29,10 +29,14 @@ import java.util.Properties;
 
 
 /**
- * Retrieves user details from an in-memory list created by the bean context.
+ * Retrieves user details from an in-memory list created in the application context.
+ * <p>
+ * Username lookups are case-insensitive.
  *
  * @author Ben Alex
+ * @author Luke Taylor
  */
+@SuppressWarnings("deprecation")
 public class InMemoryDaoImpl implements UserDetailsService, InitializingBean {
     //~ Instance fields ================================================================================================
 
diff --git a/core/src/main/java/org/springframework/security/core/userdetails/memory/UserMap.java b/core/src/main/java/org/springframework/security/core/userdetails/memory/UserMap.java
index 2554d2762b..b791549900 100644
--- a/core/src/main/java/org/springframework/security/core/userdetails/memory/UserMap.java
+++ b/core/src/main/java/org/springframework/security/core/userdetails/memory/UserMap.java
@@ -29,7 +29,9 @@ import org.springframework.util.Assert;
  * Used by {@link InMemoryDaoImpl} to store a list of users and their corresponding granted authorities.
  *
  * @author Ben Alex
+ * @deprecated Use a plain map instead
  */
+@Deprecated
 public class UserMap {
     //~ Static fields/initializers =====================================================================================
 
diff --git a/core/src/test/java/org/springframework/security/core/userdetails/memory/InMemoryDaoTests.java b/core/src/test/java/org/springframework/security/core/userdetails/memory/InMemoryDaoTests.java
index e0b21c625e..6ce8d51f95 100644
--- a/core/src/test/java/org/springframework/security/core/userdetails/memory/InMemoryDaoTests.java
+++ b/core/src/test/java/org/springframework/security/core/userdetails/memory/InMemoryDaoTests.java
@@ -30,26 +30,14 @@ import java.util.Properties;
  *
  * @author Ben Alex
  */
+@SuppressWarnings("deprecation")
 public class InMemoryDaoTests extends TestCase {
-    //~ Constructors ===================================================================================================
-
-    public InMemoryDaoTests() {
-        super();
-    }
-
-    public InMemoryDaoTests(String arg0) {
-        super(arg0);
-    }
 
     //~ Methods ========================================================================================================
 
-    public static void main(String[] args) {
-        junit.textui.TestRunner.run(InMemoryDaoTests.class);
-    }
-
     private UserMap makeUserMap() {
         UserMapEditor editor = new UserMapEditor();
-        editor.setAsText("rod=koala,ROLE_ONE,ROLE_TWO,enabled\r\nscott=wombat,ROLE_ONE,ROLE_TWO,enabled");
+        editor.setAsText("rod=koala,ROLE_ONE,ROLE_TWO,enabled\nScott=wombat,ROLE_ONE,ROLE_TWO,enabled");
 
         return (UserMap) editor.getValue();
     }