I'm having problems with P5 locking up during renders that I have not had before. My system has a 1.5 mhz Athlon with 1 gig RAM and a XFX Geforce FX5200 video card. I kept getting messages that I didn't have enough virtual memory and I don't know if I screwed something up. Should I let Windows XP set the cache or should I set it? I have 2 hard drives, the one with P5 is partitioned. The scene that I am currently working on has 2 V3 and one M2 characters, but I have rendered many scenes with that or more before without problems. Any suggestions appreciated. Does P6 handle memory any better or would my problems increase?