I have a Lenovo ThinkCentre 91Z all in one pc with AMD graphics and ILITEK multitouch. I am using ubuntu 12.10 and latest catalyst drivers and it seems to be working ok.
I have a problem similar to the one referenced here http://ubuntuforums.org/archive/index.php/t-2064976.html
I am testing this in browsers (chrome, chromium, firefox, opera) but it happens elsewhere also. When I click around the screen it all seems ok for a few minutes and then the touchscreen mouse click seems to get stuck clicking (holding) some location and clicks anywhere else will actually select some area of screen (like click and drag). This brakes a lot of functionallity, some pages are impossible to scroll afterwards etc.. Everything is resolved if I log out and log in again.
I don't know anyting about the touchscreen configuration/drivers/compatibility so I dont know where to look. Any ideas?