A few weeks ago I uninstalled the longhorn brisco pack, yet the log on screen stayed the same. My start menu reverted back to xp but no the  logon. Today I tried to see If I could install it to uninstall again and when I launched the installer it said it "A briscopack is uninstalling" and said something like wait or reboot if neccesary, I rebooted to check and when I came back it said the same thing.