My PC is running noticeable slower than it should. Going to Task Manager, I see that 42 processes are being run, which seems quite a bit higher than should be considering I'm just using WinAmp and Firefox right now. CPU usage is at 100% with a P4 2.8Ghz and 512 RAM. How can I fix this and how do I know which processes can't be stopped without screwing up PC usage? Another question that may be related. I've been running AdAware pretty often, yet immediately after rebooting my computer so as to let it remove all found spyware etc, ISTBAR and AdRotator keep coming back with a vengeance even when I haven't visited any sites outside of CNN/ESPN/other such very mainstream sites.