I have PS 6 and have had no problems...my paintings run between 65 and 120 megs. The problem you are having is probably hardware. I use two hard drives , the second hard drive is partioned into 3 drives which I use for swap disks. Another part of the problem can be ram. My pentium 3 has 712 megs of ram, and my pentium 4 has 512 megs of sd ram. Prior to these upgrades, I locked up constantly and was reformatting about every six weeks. Dell was going broke supporting me.