Did someone run the test-suite of the binary distributions? http://www.haskell.org/ghc/dist/6.6/ghc-6.6-ppc-apple-darwin.tar.gz http://www.haskell.org/ghc/dist/6.6/ghc-6.6-i386-apple-darwin.tar.bz2 I've build a (ppc-) mac-distribution from sources and my results are shown below. I had the following 3 unexpected failures under linux, too (by using "make TEST_HC=<installed ghc>" and the <installed ghc> was from http://www.haskell.org/ghc/dist/6.6/ghc-6.6-i386-unknown-linux.tar.bz2) cg058(ghci) ghcpkg01(normal) ghcpkg03(normal) I thought the failure signals002(ghci) was related to http://article.gmane.org/gmane.comp.lang.haskell.glasgow.user/10947 In fact, I needed to kill the ghc-process to continue the tests. The test files cc004.hs and ffi012.hs failed with several messages of the form: calling convention not supported on this architecture: stdcall When checking declaration: foreign import stdcall safe "wrapper" wrap_f :: F -> IO (FunPtr F) However, they did not make it into the summary Cheers Christian OVERALL SUMMARY for test run started at Mon Oct 23 14:54:15 CEST 2006 1455 total tests, which gave rise to 6441 test cases, of which 0 caused framework failures 1126 were skipped 5242 expected passes 55 expected failures 3 unexpected passes 15 unexpected failures Unexpected passes: barton-mangler-bug(optasm) cholewo-eval(optasm,profasm) Unexpected failures: barton-mangler-bug(opt) cabal02(normal) cg058(ghci) conc019(opt,profasm) conc024(opt) ffi009(ghci) forkprocess01(ghci) galois_raytrace(opt,prof) ghcpkg01(normal) ghcpkg03(normal) joao-circular(prof,profasm) signals002(ghci)