A series of weird things have been happening to me recently. Here's where it all started. First of all, at the welcome screen, I went to turn off my computer and instead of turn off computer, it said "Turn off Hi". That was very weird and made me suspicious (User accounts were still displayed and working properly at this time). The next day, my user accounts disappeared from the welcome screen! To login, I tapped Ctrl-Alt-Delete 2 times to be able to successfully logon. When trying to edit my user accounts, none appeared accept for the guest account which said it was turned off. Being as suspicious as I was, I went to restart my computer to go to safe mode and scan with Norton Antivirus 2011. When my computer restarts, it says shutting down for 10 seconds then it restarts. Well, upon trying to restart my computer, my mouse made some sudden jolts all over the screen in the last couple of seconds of the shut down process. It was moving all over the place. Funny thing is that it has never done that before! Could this mean that someone is trying to hack into my computer or is this some kind of virus (that's what I'm leading towards). "Turn off Hi"? User accounts disappeared? AND sudden mouse movements all over the screen when shutting down!? (All happened within a matter of 2 days) In case your wondering, I am using windows xp sp 3 with Norton Antivirus 2011. Someone please help me!!!!!!!!!!