your big problem is that IE isn't a prog that's installed on windows .... it's actually part of the OS ... so webdude is right - ignore the problem and you could find others.
until recently it used to happen to me on this very site ... I assume mr AB fixed the problem with the site's code.
so the first question is ... generally all sites ... or just a couple?
options .... make sure that windows is fully up-to-date..... consider upgrading to IE7
could try firefox on a site you know causes problems
http://portableapps.com/apps/internet/firefox_ portable
just download and run ... if you don't like ... just delete