Computer problems
 

I have been having this weird problem with my computer. About a week ago I noticed my computer running way to slow. I hit ctrl+alt+delete and noticed that one of my svchost.exe processes was taking up 95%+ of my processing. I stoped it and my computer started to shut down. did the little shutdown - a thing to turn it off and bam my computer worked and wasnt screwed up for about half a week. Last night it came back. Now when I get rid of the Svchost I cant open up and desktop files, copy and paste links or text of any sort and I cant use and media files. All I can do is semi browse the web and play solitare.
How can I fix this without having to reformat yet again? Also what could be causing this? I did virus scans and they come up neg, get rid of spyware and all that and it still happens. Only one Svchost.exe process is doing this, the others are fine.

what kind of services are you running?
start>run>services.msc

do you see anything suspicious running in there? if so im sorry!

everything looks like it should be running. nothing funky in there.

Smells like Sasser. *sniff* *sniff* Get that McAfee stinger thing and run it.

mind posting a screenshot of your running processes?

I highlighted the problem one in red and then the system idle process which is reading 00%

[url=http://img47.exs.cx/my.php?loc=img47&image=processes4lh.jpg:19873][img]http://img47.exs.cx/img47/916/processes4lh.th.jpg[/img][/url:19873]

here are some links to help out
About svchost
[url:abf67]http://support.microsoft.com/default.aspx?scid=kb;EN-US;250320[/url:abf67]
Viruses

[url:abf67]http://securityresponse.symantec.com/avcenter/venc/data/backdoor.xts.html[/url:abf67]