Well, i have a simple Dell Optiplex GX50 but its all been modified. 256 ram, 40gig hdd, Pentium 4 and so on... But its been sluggish ever since i updated it, i have Nortan 05, Adaware SE, and Hijack this that i run ever 2 days, is there any tips you guys have to me to make my PC run at optimum level?