Comment 4 for bug 983622

Hi, I don't have a permanent fix, but you can temporally change many different tablet properties using xsetwacom.

"xsetwacom -h" will give you the instructions you need. Basically:

xsetwacom --list devices Will list the your devices.

xsetwacom --set "device name" parameter values will set device parameter by name
xsetwacom --get "device name" parameter will show device parameter value. can also use all to show values for all parameters.

To fix the distortion, you need to reduce the usable area of your tablet to match the ratio of your screen.
http://www.gimptalk.com/index.php?/topic/17755-install-guide-wacom-drawing-tablets-with-gimp/ has a decent explanation of this, but editing the xorg may or may not work anymore. You can get the current area using the --get option. Once you calculate the new area, set it using the --set option.
To fix the distortion for me, I used the following commands:

xsetwacom --set "Wacom BambooFun 6x8 stylus" Area 0 0 21648 12177
xsetwacom --set "Wacom BambooFun 6x8 eraser" Area 0 0 21648 12177
xsetwacom --set "Wacom BambooFun 6x8 cursor" Area 0 0 21648 12177