After installing XP SP3 and AVG 8, my pc slowed right down. I unsuccessfully uninstalled SP3 and had to re-install XP SP2 from the original disc. It's taken me weeks to get most of my applications back, but my pc is still slow. CPU spikes create havoc with my Audigy 2 ZS soundcard. I uninstalled a number of old applications to release space and re-installed the soundcard software. I appears that the registry doesn't get fully changed when I uninstall programs because the installer quit saying that the software was already installed. I also ran Spyware Detector and Malwarebytes, which picked up and deleted several "nasties" that AVG failed to find. I've run Hijackthis and attached the log. Can you help please?