Only one date off from mine. I run an XP system similar to yours and I'm not having that problem. If you haven't changed any setting prior to or alfter the update I would suggest uninstalling WBs running a clean up program like CCleaner and reboot then reinstall. Before doing it remember to reset to the default skin. After you reinstall reboot one more time.
I know you have checked several skins, I guess it's safe to say it's happening to all of them?