My phone was automatically updated to 2.2 a few weeks ago. I'm just now discovering what new features are available. So far the one that I know I will use the most is tethering. The even better news is that it is a snap to use with Ubuntu Linux.

I use GNOME which comes as standard with Ubuntu. Part of GNOME is the Network Manager. Simply connect your phone to the USB port on your laptop or desktop, turn on USB Tethering, and network manager does the rest. You should now see a special device show up in network manager. Make sure it is selected and you can immediately start using your phone as a gateway to the internet.