Index: wp-admin/css/wp-admin.dev.css
===================================================================
--- wp-admin/css/wp-admin.dev.css	(revision 18873)
+++ wp-admin/css/wp-admin.dev.css	(working copy)
@@ -2307,6 +2307,7 @@
 	height: 4px;
 	margin-top: 8px;
 	margin-left: 7px;
+	position: absolute;
 	background-image: url(../images/sort.gif);
 	background-repeat: no-repeat;
 }
@@ -2324,6 +2325,7 @@
 th.sorted a {
 	display: block;
 	overflow: hidden;
+	position: relative;
 	padding: 7px 7px 8px;
 }
 
@@ -2340,13 +2342,13 @@
 
 th.sorted.asc .sorting-indicator,
 th.desc:hover span.sorting-indicator {
-	display: block;
+	display: inline;
 	background-position: 0 0;
 }
 
 th.sorted.desc .sorting-indicator,
 th.asc:hover span.sorting-indicator {
-	display: block;
+	display: inline;
 	background-position: -7px 0;
 }