Hi,
I really need some help.
Everynight for the last two days I've had a really annoying PROBLEM  
When I goto bed, I leave my PC downloading a Linux ISO. When I come back the following morning, my computer is back at the login screen and when I type in my password it logs me into windows like i was originaly logged out  :-?
When I log back on, I load up my torrent client and the Linux ISO has to REHASH everytime.
I've check the system uptime and the pc seems to have restarted its-self an hour after I went to bed  :-/
A few days AGO i formatted my HDD and reinstalled windows because of constant errors but i never ever had this problem before  
The only thing that I've been using thats different is my Torrent client, i've changed to "G3 Torrent"

My PC Specs are as follows if it helps:

WinXP Pro
256MB RAM
40GB HDD (Boot)
80GB HDD (Storage)
Nvidia GForce FX5200
P3 800MHz

Please Please Please help.
Thanks in advance,
Shoon81Ok, lets make sure of something. Right click on your desktop, then properties. Go to the screen saver tab, then under monitor power click the power button. Now under settings for the power scheme. make these changes. Put system standby at never and turn off hard disks at never. THen go to the advanced tab a make sure the box next to prompt for password when computer resumes form standby in NOT checked.
Does your bittorrent client have an OPTION to turn the PC off following download?do you have your screen saver set to "password protect"?. your computer may have simply logged you out because your screen saver was activated.

could anyone else have used your computer and logged you out?I'll go for the screensaver and log out when idle option.