Hel-l-lp! My parts-built PC running Windows XP Home SP3 is just barely functional. For quite a while now, up until a couple of weeks ago it would take about 20 minutes or so to boot up and about one full minute to load a program. About a month ago I updated a lot of old programs and drivers and the performance improved somewhat but it was still far from normal. I have Microsoft's firewall and Avast's free antivirus running all the time and I also run the latest version of Advanced SystemCare Free often so I don't think it's a problem caused by a virus or malware. I also occasionally run Malwar