Index: wp-admin/css/colors-classic.dev.css
===================================================================
--- wp-admin/css/colors-classic.dev.css	(revision 18122)
+++ wp-admin/css/colors-classic.dev.css	(working copy)
@@ -1268,7 +1268,7 @@
 
 #adminmenu li.wp-has-current-submenu.wp-menu-open .wp-menu-toggle,
 #adminmenu li.wp-has-current-submenu:hover .wp-menu-toggle {
-	background: transparent url(../images/arrows-dark-vs.png) no-repeat 8px 6px;
+	background: transparent url(../images/arrows-dark-vs.png) no-repeat -2px 6px;
 }
 
 #adminmenu .wp-has-submenu:hover .wp-menu-toggle,
Index: wp-admin/css/colors-fresh.dev.css
===================================================================
--- wp-admin/css/colors-fresh.dev.css	(revision 18122)
+++ wp-admin/css/colors-fresh.dev.css	(working copy)
@@ -1268,7 +1268,7 @@
 
 #adminmenu li.wp-has-current-submenu.wp-menu-open .wp-menu-toggle,
 #adminmenu li.wp-has-current-submenu:hover .wp-menu-toggle {
-	background: transparent url(../images/arrows-dark.png) no-repeat 8px 6px;
+	background: transparent url(../images/arrows-dark.png) no-repeat -2px 6px;
 }
 
 #adminmenu .wp-has-submenu:hover .wp-menu-toggle,