I have also same problem about the facebook page..when im playing farmville and try it to full screen mode the IE8 stop responding...i dont have any knowledge to fix this problem...my internet option settings all in default....still got a default add-on...my computer is only a month old using windows 7 home basic 32bit os...and im using 10.0.42.34 version of flash player..thanksHello, Allan.
Maybe your Internet Explorer doesn't support some page code of Facebook, it could be caused by Flash or PHP or Ajax feature that don't match with Internet Explorer
I've only experienced this on the facebook homepage so far, no other site, and it's happening quite a lot.