I just wanted to tell everyone that the new Folding@Home client is in beta for both Windows and Linux. I have a machine already running the Linux version and seems to be fairly stable. (They might have been out for awhile I'm just noticing now though)
A new feature in beta is allowing you to get whats the max amount of RAM the actual client can be alloted. I think there are a few more features in the works for the final version like GPU utilization and to further improve dual-core and SMP machines.
Article for GPU Utilization and SMP/dual-core Optimization:
http://folding.stanford.edu/FAQ-highperformance.html