[CS-FSLUG] [OT] Windows XP does something fishy

[N. Thompson]

I've noticed in Windows that when its left on and I haven't been on it 
in a while the hard drive comes into use for extended periods of time. I 
do not think Windows XP is defragmenting during its idle time because 
I've checked the disk fragmentation after its done that for a while, as 
far as I can tell I also don't have any spyware or adware or viruses on 
my computer as this has been happening for a long time and I've been 
keeping my anti-virus, anti-trojan and anti-spyware software up to date.

I have a firewall in Windows, I also have anti-virus, anti-trojan and 
anti-spyware software installed so what could be causing windows to work 
the computer so hard when its supposed to be idle?