LW freezes on me now. Minimum memory for LW is 60,000 KB, preferred 61,440 KB (60 MB.) If I increase it by 300% I'd use my entire physical RAM and a good chunk of the remaining virtual. There's no serious fragmentation, I run Norton Disk Doctor every few weeks. I cleaned a few old files out, I have about 2.5 GB free space on my HD now.