Just found this thread over at FF, as some of you may have already seen PG are in the process of developing a new GPU core, core 17. One of the benefits is that it is supposed to run on linux and from the comments made by protoneer things look promising.
http://foldingforum.org/viewtopic.php?f=85&t=22973
http://foldingforum.org/viewtopic.php?f=85&t=22973