Slow Computer May Not Be Malware RelatedComputer and browser slowness are not always caused by malware.
Here are some tutorials with suggestions for things you can do to improve speed and system performance:
Slow Computer/browser? Check Here First; It May Not Be Malware
http://www.bleepingcomputer.com/forums/topic87058.htmlChecklist:
(Please scroll down to the text instructions and do not use the steps in the advertisements.)
http://www.bleepingcomputer.com/forums/topic44694.htmlHelp! My computer is slow!
http://users.telenet.be/bluepatchy/miekiemoes/slowcomputer.html**NOTE: Not all troubleshooting tips will apply to pre-XP versions of Windows.