i have a imac8,1-mac os x 10.5.8, 2.4 HGz Intel Core 2 Duo, 2GB 800 MHz ddr2 sdram-well, first of all this has been the best Computer I have ever owned! I downloaded a cam video using "Vuze" several months ago, and thats were my problems have started! its been getting worst, and now I cant even...