Index: wp-admin/admin-functions.php
===================================================================
--- wp-admin/admin-functions.php	(revision 4262)
+++ wp-admin/admin-functions.php	(working copy)
@@ -784,7 +784,7 @@
       <?php if ('private' == $post->post_status) _e(' - <strong>Private</strong>'); ?>
     </td> 
     <td><?php the_author() ?></td>
-    <td><?php echo mysql2date('Y-m-d g:i a', $post->post_modified); ?></td> 
+    <td><?php echo mysql2date(get_option('date_format').' '.get_option('time_format'), $post->post_modified); ?></td> 
 	<td><a href="<?php the_permalink(); ?>" rel="permalink" class="edit"><?php _e('View'); ?></a></td>
     <td><?php if ( current_user_can('edit_page', $id) ) { echo "<a href='page.php?action=edit&amp;post=$id' class='edit'>" . __('Edit') . "</a>"; } ?></td> 
     <td><?php if ( current_user_can('delete_page', $id) ) { echo "<a href='" . wp_nonce_url("page.php?action=delete&amp;post=$id", 'delete-page_' . $id) .  "' class='delete' onclick=\"return deleteSomething( 'page', " . $id . ", '" . sprintf(__("You are about to delete the &quot;%s&quot; page.\\n&quot;OK&quot; to delete, &quot;Cancel&quot; to stop."), js_escape(get_the_title()) ) . "' );\">" . __('Delete') . "</a>"; } ?></td> 
Index: wp-admin/edit.php
===================================================================
--- wp-admin/edit.php	(revision 4262)
+++ wp-admin/edit.php	(working copy)
@@ -175,7 +175,7 @@
 
 	case 'date':
 		?>
-		<td><?php the_time('Y-m-d \<\b\r \/\> g:i:s a'); ?></td>
+		<td><?php the_time(get_option('date_format').'\<\b\r \/\>'.get_option('time_format')); ?></td>
 		<?php
 		break;
 	case 'title':