Index: modules/system/system.css
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.css,v
retrieving revision 1.54
diff -u -r1.54 system.css
--- modules/system/system.css	11 Apr 2009 22:19:45 -0000	1.54
+++ modules/system/system.css	26 Apr 2009 01:13:29 -0000
@@ -347,10 +347,6 @@
 html.js fieldset.collapsible {
   position: relative;
 }
-/* Avoid jumping around due to margins collapsing into collapsible fieldset border */
-html.js fieldset.collapsible .fieldset-wrapper {
-  overflow: auto;
-}
 
 /*
 ** Resizable text areas