Recently the “never stops shutting down” problem came BACK to my tablet whenever I ran iTunes, a problem I never had until I upgraded to Windows 7.

I did some research on the net and ONE thing caught my attention. A user suggested plugging the USB cable into a USB port directly on the motherboard. I was plugging mine into the side port on my Tx2z, so I decided to see if plugging it into the back would fix the problem.

It looks like it did. I was able to sync my iPhone to iTunes with no problem, shut down iTunes and successfully shut down the tablet! So if you are having the same problem I am, try plugging your iPod or iPhone into a USB jack that is directly tied to the motherboard. It worked for me! Good luck.