Ran 13 loops with no problems. Memory Sizing -probe option, if I do "memory sizing" and "all" it locks.... the only 2 major components of the system I haven't had checked/reaplced are the memory and CPU itself..... memory is Corsair Dual channel 1GB XMS Pc3200 and CPU is Athlon XP 3000+ 400mhz FSB.... )Barton)