Index: /CKEditor/branches/features/sharedspaces/_source/skins/kama/toolbar.css
===================================================================
--- /CKEditor/branches/features/sharedspaces/_source/skins/kama/toolbar.css	(revision 4649)
+++ /CKEditor/branches/features/sharedspaces/_source/skins/kama/toolbar.css	(revision 4650)
@@ -400,2 +400,8 @@
 	margin-bottom: 0;
 }
+
+.cke_skin_kama .cke_browser_gecko .cke_toolbox
+{
+	/* Define the padding-bottom otherwise the collapser button will not be clicable in FF */
+	padding-bottom: 1px;
+}