tablet stylus buttons default values are not the expected ones

My Intuos 3 A5 usb doesn't show this problem - all buttons are assigned their default values in Gimp or Inkscape.

Your problem might come from the fact that manufacturers sometimes introduce bugs (especially in the case of a Tablet PC, where they make their own modifications). Else, you could check with serial Wacom tablet owners.

In case your problem is only specific to you (or the brand of Tablet PC you're using), you might have more chances talking directly to upstream (The Linux Wacom Project). It should be possible with a few commands to get all the information on your hardware they need to update the linux wacom driver to "correct" the bad configuration of your hw. In case you have a Wacom tablet, you would more easily find owners of the same hw (they have a mailing list) who could tell you if they face the same bug.

The autoconfiguration of wacom has been disabled in 7.10, and completely removed in hardy, so this is not going to be fixed by the installation scripts.

How comes that regression didn't figure in the release note, and how are Ubuntu users supposed to use their Wacom tablets now?

In gutsy, the xorg.conf has those entries but commented out, and in hardy we will be relying on input-hotplug.

I know it has those entries commented out - that's exactly the problem, since Ubuntu users won't know why their tablet doesn't work any more.

However, it would be nice if Hardy solves the bug. However, will a fix/backport be available so the regression is fixed in Gutsy too?
Thanks

No, it will not be changed for gutsy. Input-hotplug should make things work out-of-the-box, and that's what we are targetting for hardy.