I frequently run into this very annoying bug in IE. I configured the browser to ask before writing cookies of unknown sites. When I hit a site that has both a Javascript error and a cookie warning popping up, there is a deadlock situation, since neither of the dialog boxes responds to input. The only way to get out of this is to kill the browser in Task Manager. My Google searches for IE, deadlock, cookie, error, and any combinations thereof, did not reveal much. Is it just me?