I’ve been using IE 8 beta 2 since it’s September release. There are a ton of features that make it a worthy upgrade, but it has it’s share of problems. One bug that is particularly annoying is certain sites that want to do a pop-up due to a security change cause a flood of new IE windows. The only resolution I have found is to open task manager, sort by CPU used, and kill the top IE process. This closes all IE windows, which is a pain but at least the problem is resolved. I’d wait for the next release if you haven’t already installed it, but if you want to, here is a link to try it.
The IE team posted an update saying a new release candidate is due in the first part of 2009. I look forward to the release. read more here: http://bink.nu/news/ie8-what-s-after-beta-2.aspx