I tried the new LightZone beta for Linux last night. It looks good but was glacially slow on my home PC. So I went out today and bought more RAM to bring this system up to a 3GB total. With that, all four slots are occupied and the only way to upgrade further would be to throw out the 512MB chips. I don’t think that’ll ever happen considering the difficulty I had in finding DDR2 667MHz RAM today; by the time I get to thinking about upgrading to 4GB, DDR2 667 will no longer be sold!