(Tried sending to cvs-ghc, said it was blocked for moderation because it matched a certain pattern...) Hello, I have a patch to fix the runtime system's getNumberOfProcessors() function to work properly on OS X and detect the number of CPUs. However, when I run validate, these are the final results: OVERALL SUMMARY for test run started at Tue Mar 17 21:34:36 CDT 2009 2318 total tests, which gave rise to 8661 test cases, of which 0 caused framework failures 6662 were skipped 1923 expected passes 74 expected failures 1 unexpected passes 1 unexpected failures Unexpected passes: hpc_ghc_ghci(normal) Unexpected failures: break017(ghci) Are these to be expected on OS X, or did my patch really break something? Patch is attached. Austin