My system started to run very slow recently. Boot and shutdown are also very slow. I tried defragmenting my drives and running CHKDSK with no luck. Windows operation is very laggy although CPU is NOT utilized at 100%. CPU acts normally like it should. For example, extracting files from RAR archive takes extremely long. Same with other operations which require high HDD activity. Another example, opening whatever file or application causes mouse pointer to lag a little at that time. I have never experienced this before. Pc specs: Intel Core2 Duo, 1 GB RAM, Windows XP Pro SP2 HJT and ComboFix logs are attached. I didn't attach AVG Anti-Spyware log because it only found trackercookies with medium risk and nothing else. Please help me fix this problem.