WEBuilder--Perhaps help here
http://www.sevenforums.com/browsers-mail/28733-ie8-open-new-tab-stuck-connecting.htmlDo you have any third party toolbars installed, such as Google Toolbar? If so disable or uninstall.
I would still recommend a System Restore. It may be just coincidental that the problem started with the install of the Update. It could be something else. Go to a date a day or two before the Updates.