Index: wp-admin/includes/screen.php
===================================================================
--- wp-admin/includes/screen.php	(revision 21936)
+++ wp-admin/includes/screen.php	(working copy)
@@ -426,9 +426,16 @@
 			$id = sanitize_key( $id );
 			if ( 'edit-comments' != $id && 'edit-tags' != $id && 'edit-' == substr( $id, 0, 5 ) ) {
 				$maybe = substr( $id, 5 );
+				if ( false !== strpos( $maybe, '-' ) ) {
+					$maybe = explode( '-', $maybe );
+					$maybe2 = $maybe[1];
+					$maybe = $maybe[0];
+				}
 				if ( taxonomy_exists( $maybe ) ) {
  					$id = 'edit-tags';
 					$taxonomy = $maybe;
+					if ( ! empty( $maybe2 ) )
+						$post_type = $maybe2;
 				} elseif ( post_type_exists( $maybe ) ) {
 					$id = 'edit';
 					$post_type = $maybe;
@@ -496,7 +503,9 @@
 			case 'edit-tags' :
 				if ( null === $taxonomy )
 					$taxonomy = 'post_tag';
-				$id = 'edit-' . $taxonomy;
+				if ( null === $post_type )
+					$post_type = 'post';
+				$id = 'edit-' . $taxonomy . '-' . $post_type;
 				break;
 		}