Hello. I have a g4 466 running Tiger 10.4.11. When I try to shut down from the desktop it seems to shut down all the way then immediately restarts itself. (I can manually shutdown by pressing the big button.) This only started a couple of days ago and I can't think what I did that day to have caused this. I understand that resetting the PRAM (?) might help but I wondering if there are any side effects to this that I should be aware of first, you know like loosing all my stuff or something. Any advice would be greatly appreciated.