As long as we're on the topic of DRMs for OS-X: I've installed the new (5.3.3) release of PBS Pro on some OS-X 10.2.2 systems, and everything seems to be working out okay. I can use the systems to submit and monitor jobs, as worker nodes, and even as cluster heads. Right now they're part of a small and heterogenous "evening hours" workstation farm. Note: This is the commercial PBS Pro, not the open source and free PBS. FYI. -Chris Dwan CCGB, University of Minnesota