Remove Ubuntu packets
sudo apt-get remove bittorrent gnome-btdownload bluez-cups bluez-pcmcia-support bluez-pin bluez-utils libbluetooth1 libbtctl2 libgnomebt0 gimp gimp-data gimp-print gimp-python libgimp2.0 gnome-games gnome-screensaver ubuntu-docs yelp gnome2-user-guide