"Don't run P5 on a machine lower than 1 gig memory or processor speed. I haven't used mine since I pre-ordered it because I had an 800 MHz, 512MB Pentium III that just wouldn't run it without crashing. The program wouldn't even load some times." I don't think low RAM or CPU speed causes the infamous P5 crashes that many people are getting. Been running P5 on a 700Mhz AMD Athlon with 256MB RAM and it didn't even crash once. But I agree that you have to be very patient running P5 on a system like mine.