Xencelabs Technologies Ltd.

It's been going on for a while and I've learned to live with it but out of the blue on irregular intervals and at least twice a week my Xencelabs medium pen tablet seems to have a live of its own by frantically moving the crosshair, pointer or brush (depending in what program I am) and activating menu's or opening and closing things as if it's randomly controlled by someone else. It takes maybe just 2-5 seconds, the process is like a fast forward motion and when I remove my hand that holds the pen of the surface of the tablet it just keeps going. After that, unnecessary windows are open, commands that I do not want to be activated are activated, the program I use has been minimized or the window shifted that it's half on the screen and now just before I post this the program I was using just closed without saving the work I was busy on (a 3D model). I lost a 3 hours of generating content whereby I thought to address the issue now. In the past I have been able to get back to the normal state just before a 'burst' happened by pressing ctrl-z (in Photoshop whereby random paint strokes or lines where appearing) but it's not always been possible.

The tablet and pen work fine for the rest but these 'bursts' are quite annoying especially when work is lost. I tried to record my screen in the past at irregular intervals but have not been able to record such a 'burst'.

Any advise or any one else that has experienced this?     

I tried every USB port on my workstation over the last years since I bought my Xencelabs and every time when it looked that the issue was resolved it appeared suddenly again. It took me weeks to 'catch the jerk movement ghost' in action by occasionally recording my desktop and I succeeded (see attached at 6s it starts). My latest and only left resort is that I found just one more USB port to test which is the one at the back of my monitor that is also the closest to the tablet. I'm about 1.5 weeks in and fingers crossed. I'm not sure if it's due to EMI though as I've relocated for work with my workstation to at least 3-4 other places since I had the Xencelabs tablet but it always was there. If it would just that jerky movement it would be ok but I had occasions that files got selected and repositioned and almost even deleted. One more solution is to buy a new Xencelabs USB dongle but if that's not working I guess I need to roll back to the brand I used the last 25 years.

Well customer care kindly sent me another USB dongle to try, but the problem persists, sadly.  

Well I've tried other USB ports, but the problem persists. I shall contact customer care. 

I used to have this problem, which went away when I switched to a hardwired connection only. Recently when I tried the wireless/dongle connection again, the problem reappeared. It would be nice if the wireless connection didn't consistently result in wild (and sometimes destructive) cursor behavior.

Thanks Mike, having seen the other posts above, I've already plugged my dongle into a different port, I shall see how it goes.

I've had this exact problem, did anyone figure out the problem (other than going back to wired) ? 

Once I disconnected the wireless dongle and used a hard-wired connection the jumping cursor went away. Just my two cents.