A while ago I had some discussion in the mailing list with you about the Bamboo Pen&Touch (CTH-460). At that time you were implementing the drivers for the fresh and new device, which didn't work at all.
Now the Bamboo Pen&Touch works, but not quite right. It doesn't behave like a real pointer device when it comes to interaction with the graphical user interface. Just drawing in graphics programs works just fine, but it is not possible to properly operate normal GTK or Qt applications with pen or finger.
Taps with my finger aren't recognized at all, taps with the pen behave very different depending on the application. Sometimes, they are ignored, sometimes they work half, i.e. a button goes into pressed state, but doesn't execute any action as if it would hold down the mouse without releasing it. The last issue often results in unwanted dragging of things like text or buttons.
Interaction with KDE's plasma interface is even more horrible. E.g. it is impossible to use the desktop grid properly. Trying to do so breaks many things.
It is possible to drag Kwin windows around, but that's basically it.
However, if I use the button on the tablet for clicking, the behavior is as expected that of a normal mouse click. So only tapping gestures with pen or finger are misbehaving.
Another issue is that the touch functionality doesn't work well. As I stated above, taps are completely ignored, but that is not the only problem. Also the movement is quite inaccurate, especially when it comes to small moves. Then the cursor jumps in fixed steps, instead of moving smoothly pixel by pixel. Therefore it is very hard to hit small UI elements such as small buttons or links (which can't be clicked anyway without using the normal mouse, the button on the tablet or at least the pen).
As you might have suspected, I'm using KDE (version 4.7.1). My distribution is Gentoo Linux with 2.6.39 kernel. Xorg server is 1.10.4.
I've tried the native wacom kernel module (which didn't work at all) and the version from Portage (linuxwacom-module-0.8.8_p10).
On the X side I've tried the one from Portage (xf86-input-wacom-0.11.1) as well as the latest Git. All have the above problems.
Would be nice to see this fixed. It is really annoying and makes the tablet nearly unusable.