Here's Mine:
Service Pack 2 has its ups and downs. The beefed up firewall was a nice touch, but it also limited TCP/IP connections, which can cancel out filesharing. Also, I have noticed a few Windows Installer errors when I try to install a program that utilizes this service. I would then have to start the service manually and run the setup program. I had a few RPC errors stating that the service was not running when it was. I looked at it from SP1 and SP2 angles and I believe I will stick with SP1 until these bugs are ironed out....