jquery 1.4.4 class selectors slowness in internet explorer

just upgraded from jquery 1.4.2 to 1.4.4 and i've encountered a performance problem which i think has something to do with a lot of class selectors, sometimes even explorer crashes and in 1.4.2 its working开发者_运维问答 perfect..

Twitter has had performance issues with 1.4.4 and went back to 1.4.2 until the jQuery team fixes it. The creator of jQuery talks about it a little bit here in terms of the selector engine:

http://ejohn.org/blog/learning-from-twitter/