Per user quota didn't show in FF (and possibly IE) http://forum.owncloud.org/viewtopic.php?f=4&t=2716&p=5373#p5324.

settings/css/settings.css

@@ -34,7 +34,7 @@ li.selected { background-color:#ddd; }
 #content>table:not(.nostyle) { margin-top:3em; }
 table:not(.nostyle) { width:100%; }
 #rightcontent { padding-left: 1em; }
-td.quota { position:relative }
+td.quota { position:absolute; }
 div.quota { float:right; display:block; position:absolute; right:25em; top:0; }
 select.quota { position:absolute; left:0; top:0; width:10em; }
 input.quota-other { display:none; position:absolute; left:0.1em; top:0.1em; width:7em; border:none; -webkit-box-shadow: none -mox-box-shadow:none ; box-shadow:none; }