MSN Messenger; I hadn't noticed that it installed it at all, then again I just disable it; i've not seen MS messenger in years lol...

The security center is gay; I don't appreciate being forced to enable Windows Auto Updates and the Windows Firewall to make that damned icon go away....

The IE popup blocker is fuckin pointless and ugly as hell, I use the GoogleBar one and just set IE to ignore the windows popup blocker.

SP2 does have a good amount of security fixes however so the goods sadly outweigh the bads...