System forgets settings and doesn't allow to install applications after reboot
it's the same problem with my 1000HD in three times and, sorry, there isn't a solve. You must get the warranty and put it on ebay if it's ok after the repair.
It's not a hardware problem it seems to be a firmware problem and it will going on and on. You will get it as good as new from warranty repair an some weeks later - kawoom, same problem. There is no fun with this device. Sorry.

Best regards and so sorry for my english

Marko