This was supposively fixed in change Rev [2011], but both this rev and the nightly Rev give pseudo leaks (memory usage always goes up). I was able to get a stable "InUse" DOM elements within sIEve by using the discardElement method (see http://www.outofhanwell.com/ieleak/index.php?title=Fixing_Leaks), but the memory usage continues to climb regardless. Here is the link with the sample I'm testing against: http://dev.jquery.com/ticket/1233