Index: wp-admin/includes/meta-boxes.php
===================================================================
--- wp-admin/includes/meta-boxes.php	(revision 18296)
+++ wp-admin/includes/meta-boxes.php	(working copy)
@@ -322,7 +322,7 @@
 
 	?>
 	<div id="taxonomy-<?php echo $taxonomy; ?>" class="categorydiv">
-		<ul id="<?php echo $taxonomy; ?>-tabs" class="category-tabs">
+		<ul id="<?php echo $taxonomy; ?>-tabs" class="category-tabs clearfix">
 			<li class="tabs"><a href="#<?php echo $taxonomy; ?>-all" tabindex="3"><?php echo $tax->labels->all_items; ?></a></li>
 			<li class="hide-if-no-js"><a href="#<?php echo $taxonomy; ?>-pop" tabindex="3"><?php _e( 'Most Used' ); ?></a></li>
 		</ul>
Index: wp-admin/includes/nav-menu.php
===================================================================
--- wp-admin/includes/nav-menu.php	(revision 18296)
+++ wp-admin/includes/nav-menu.php	(working copy)
@@ -660,7 +660,7 @@
 
 	?>
 	<div id="posttype-<?php echo $post_type_name; ?>" class="posttypediv">
-		<ul id="posttype-<?php echo $post_type_name; ?>-tabs" class="posttype-tabs add-menu-item-tabs">
+		<ul id="posttype-<?php echo $post_type_name; ?>-tabs" class="posttype-tabs add-menu-item-tabs clearfix">
 			<li <?php echo ( 'most-recent' == $current_tab ? ' class="tabs"' : '' ); ?>><a class="nav-tab-link" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'most-recent', remove_query_arg($removed_args))); ?>#tabs-panel-posttype-<?php echo $post_type_name; ?>-most-recent"><?php _e('Most Recent'); ?></a></li>
 			<li <?php echo ( 'all' == $current_tab ? ' class="tabs"' : '' ); ?>><a class="nav-tab-link" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'all', remove_query_arg($removed_args))); ?>#<?php echo $post_type_name; ?>-all"><?php _e('View All'); ?></a></li>
 			<li <?php echo ( 'search' == $current_tab ? ' class="tabs"' : '' ); ?>><a class="nav-tab-link" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'search', remove_query_arg($removed_args))); ?>#tabs-panel-posttype-<?php echo $post_type_name; ?>-search"><?php _e('Search'); ?></a></li>
@@ -874,7 +874,7 @@
 
 	?>
 	<div id="taxonomy-<?php echo $taxonomy_name; ?>" class="taxonomydiv">
-		<ul id="taxonomy-<?php echo $taxonomy_name; ?>-tabs" class="taxonomy-tabs add-menu-item-tabs">
+		<ul id="taxonomy-<?php echo $taxonomy_name; ?>-tabs" class="taxonomy-tabs add-menu-item-tabs clearfix">
 			<li <?php echo ( 'most-used' == $current_tab ? ' class="tabs"' : '' ); ?>><a class="nav-tab-link" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'most-used', remove_query_arg($removed_args))); ?>#tabs-panel-<?php echo $taxonomy_name; ?>-pop"><?php _e('Most Used'); ?></a></li>
 			<li <?php echo ( 'all' == $current_tab ? ' class="tabs"' : '' ); ?>><a class="nav-tab-link" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'all', remove_query_arg($removed_args))); ?>#tabs-panel-<?php echo $taxonomy_name; ?>-all"><?php _e('View All'); ?></a></li>
 			<li <?php echo ( 'search' == $current_tab ? ' class="tabs"' : '' ); ?>><a class="nav-tab-link" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'search', remove_query_arg($removed_args))); ?>#tabs-panel-search-taxonomy-<?php echo $taxonomy_name; ?>"><?php _e('Search'); ?></a></li>
Index: wp-admin/css/wp-admin.dev.css
===================================================================
--- wp-admin/css/wp-admin.dev.css	(revision 18296)
+++ wp-admin/css/wp-admin.dev.css	(working copy)
@@ -7,6 +7,7 @@
 
 TABLE OF CONTENTS:
 ------------------
+ 0.0 - Utilities
  1.0 - Text Elements
  2.0 - Forms
  3.0 - Actions
@@ -45,8 +46,21 @@
 ------------------------------------------------------------------------------*/
 
 
+/*------------------------------------------------------------------------------
+  0.0 - Utilities
+------------------------------------------------------------------------------*/
 
+.clearfix:after {
+	visibility: hidden;
+	display: block;
+	font-size: 0;
+	content: " ";
+	clear: both;
+	height: 0;
+}
+*:first-child+html .clearfix { zoom: 1; } /* IE7 */
 
+
 /*------------------------------------------------------------------------------
   1.0 - Text Styles
 ------------------------------------------------------------------------------*/
@@ -2431,17 +2445,6 @@
 	padding: 8px;
 }
 
-#post-body ul.category-tabs li.tabs,
-#post-body ul.add-menu-item-tabs li.tabs {
-	-moz-border-radius: 3px 0 0 3px;
-	-webkit-border-top-left-radius: 3px;
-	-webkit-border-bottom-left-radius: 3px;
-	-khtml-border-top-left-radius: 3px;
-	-khtml-border-bottom-left-radius: 3px;
-	border-top-left-radius: 3px;
-	border-bottom-left-radius: 3px;
-}
-
 #post-body ul.category-tabs li.tabs a,
 #post-body ul.add-menu-item-tabs li.tabs a {
 	font-weight: bold;
@@ -2485,20 +2488,30 @@
 #side-sortables .category-tabs li,
 #side-sortables .add-menu-item-tabs li,
 .wp-tab-bar li {
-	display: inline;
-	line-height: 1.35em;
+	display: block;
+	float: left;
+	margin-bottom: 0;
+	padding: 3px 5px;
 }
 
+#side-sortables .category-tabs li.tabs,
+#side-sortables .add-menu-item-tabs li.tabs,
+.wp-tab-bar .wp-tab-active {
+	margin-bottom: -1px;
+	padding-bottom: 4px;
+	padding-top: 2px;
+}
+
 #side-sortables .category-tabs a,
 #side-sortables .add-menu-item-tabs a,
 .wp-tab-bar a {
 	text-decoration: none;
 }
 
-#side-sortables .category-tabs,
-#side-sortables .add-menu-item-tabs,
-.wp-tab-bar {
-	margin-bottom: 3px;
+ul.category-tabs,
+ul.add-menu-item-tabs,
+ul.wp-tab-bar {
+	margin-top: 12px;
 }
 
 .categorydiv ul,
@@ -2532,11 +2545,6 @@
 #normal-sortables .comments-box {
 	border: 0 none;
 }
-ul.category-tabs,
-ul.add-menu-item-tabs,
-ul.wp-tab-bar {
-	margin-top: 12px;
-}
 
 #side-sortables .comments-box thead th,
 #normal-sortables .comments-box thead th {
@@ -2566,7 +2574,6 @@
 ul.category-tabs li,
 ul.add-menu-item-tabs li,
 ul.wp-tab-bar li {
-	padding: 5px;
 	-moz-border-radius: 3px 3px 0 0;
 	-webkit-border-top-left-radius: 3px;
 	-webkit-border-top-right-radius: 3px;
@@ -2868,17 +2875,6 @@
 	padding: 8px;
 }
 
-#post-body ul.category-tabs li.tabs,
-#post-body ul.add-menu-item-tabs li.tabs {
-	-moz-border-radius: 3px 0 0 3px;
-	-webkit-border-top-left-radius: 3px;
-	-webkit-border-bottom-left-radius: 3px;
-	-khtml-border-top-left-radius: 3px;
-	-khtml-border-bottom-left-radius: 3px;
-	border-top-left-radius: 3px;
-	border-bottom-left-radius: 3px;
-}
-
 #post-body ul.category-tabs li.tabs a,
 #post-body ul.add-menu-item-tabs li.tabs a {
 	font-weight: bold;
@@ -2973,18 +2969,6 @@
 	margin-right: -1px;
 }
 
-ul.category-tabs li,
-ul.add-menu-item-tabs li {
-	padding: 5px;
-	-moz-border-radius: 3px 3px 0 0;
-	-webkit-border-top-left-radius: 3px;
-	-webkit-border-top-right-radius: 3px;
-	-khtml-border-top-left-radius: 3px;
-	-khtml-border-top-right-radius: 3px;
-	border-top-left-radius: 3px;
-	border-top-right-radius: 3px;
-}
-
 .form-wrap {
 	margin: 10px 0;
 	width: 97%;