I was updating my 2g iPod touch to iOS4. The message in iTunes was "backing up...". After a while, the bar stop moving and the whole thing freeze. My computer then suddenly turn off.
I now have a problem with my iPod touch - it keeps on restarting and got stuck on the Apple logo screen, for around 20 to 30 minutes. Then the screen flicker and the whole process starts again. I have tried to reset but to no avail. I think its now restarting for the 5th time.