atabrk

Integrating IE8 with the Ultimate Extras causes this problem. Actually, not only integrating but updating windows with the IE8 and Ultimate Extras on the same windows session cause the same errors. For the solution, do not include Ultimate Extras to the integration. And if you are updating Vista, restart the computer after ie8 installation immediately before installing ultimate extras.

This has a very easy fix. Just run internet explorer as Administrator for once and the problem will go away.

You should integrate, Windows6.0-KB948609-v6001-x86 Windows6.0-KB948610-v6001-x86 packages before installing. These packages can be found in full 3.5sp1 exe file (Just extract it with winrar)