With ie you never know what to expect, a seg fault, memory dump, or any other bsod occurence..... A not -responding window is nothing. It could be a registry problem, however mostly unlikely. Kernel could be the case, but also possibly, like invader inferred, just a bad install. Like he said fully uninstall it, install ie6 and get the new service packs. If you have more problems after that, i recommend a reinstall of windows...