Problemer med fejlmeddelse Explorer 8

You could try disabling the restore-feature in the registry:
Run Registry Editor
Navigate to HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Recovery
Set the value in NoReopenLastSession = 1

If the key doesn't exist, you create it first. It's a DWORD-value

I hope it helps. It did for me, on IE8 and Vista Ultimate

Kilde:
http://social.answers.microsoft.com/Forums/en-US/InternetExplorer/thread/45a7283b-f708-4d10-944d-ae6b520f2e5c