I had the reboot loop, too. I'd set the granularity to 'Small' and arranged everything nicely, then gone back and set it to 'none'. The next drag I did sent the display into chaos, and it rebooted after about 10 seconds. Rinse and repeat. I think all the icons were trying to occupy the same space. That's what it looked like. After much panic I realised I could stop the rebooting by plugging in the USB in mass storage mode. Then I SSH'd in and modified the file that Tweakr modifies, and set the two settings back from 0 and 1. (sorry, can't check the filename or settings - in a hurry). Anyway, that sorted it. WS