I did have an issue with the Lookup function. However, I updated to SP1 HF1 and rebooted and that issue cleared up (likely with the reboot not the SP1 HF1 update). I really didn't bother looking into the issue, as it was resolved after the reboot. Honestly, it probably had nothing to do with SP1. But this is the only issue I've had since (aside from the not-to-worry-about event log errors).
In the beginning the Universe was created. This has made a lot of people very angry and is widely regarded as a bad move.