It's not "just you." I agree...get the upgrades to at least sr2. I went from sr2 to sr4 and P5 got slower. But, in my experience, P5 will always be slower than P4 no matter what you do. I run both p4/pp and P5 on a winXP pro, dual-xeon 1.7, with one gig-o-ram and 100 gig hard drive machine and P5 is a dog compared to P4/PP.