I have temporary custodianship of one of these while I try to get the calibration of the screen correct for Ubuntu.
It uses the FinePoint driver (which has, unfortunately, been pulled from Xorg's source tree now), and I cannot get the scaling and offsets to make the pointer accurately follow the touchscreen. And no, the documentation about the values to put in the xorg.conf and the sample calibration utility do not work as the documentation says (at least for this system). I can get the offsets set correctly for the top left of the screen, but the scaling makes the pointer fly off the right and bottom sides with minor movements regardless of the numbers in the configuration file. It looks like there may be an overflow or a divide by zero in the offset calculations in the driver going by the errors in the xorg.log file. I've not had the chance to look through the source yet. If anybody has any ideas, I would be interested. Ubuntu 10.4 (the last release with the touch screen driver in Xorg) also cannot drive the nvidia display correctly with hardware acceleration turned on.
Unfortunately, even if I get it working, it's still unreasonably slow, with the example I have it's got a 1GHz Transmeta Crusoe processor (which is another interesting point about this machine), so even when loaded with the maximum supported memory, it's still not going to be very usable.