I think i couldn’t wait for that service pack to be fully released so I downloaded the beta one.
Had hard time installing it, hard time using my WindowsXP (specially hardware issues… couldn’t use my WiFi neither my Sierra Aircard) and hard time uninstalling it.
I don’t recommend Service Pack 3 yet. Wait for it till its fully released (and wait for a little while for booby traps to be stepped on by others :P)