Hi all, Unfortunately, since the release of 6.10.3, still more problems have come to light in the 6.10 branch. We are therefore planning to do a 6.10.4 release. For 6.10.4, we will only consider fixes for serious bugs that cannot be easily worked around. So far, we plan to look into: * One of the patches in 6.10.2 introduced a problem where mkWeakForeignEnv# could segfault (already fixed) * readMutVar# is inlined/duplicated http://hackage.haskell.org/trac/ghc/ticket/3207 (already fixed, patch waiting to be merged) * "Permission denied" errors on Windows: http://hackage.haskell.org/trac/ghc/ticket/3231 http://hackage.haskell.org/trac/ghc/ticket/2924 * Some ghci tests fail with hLookAhead errors. We would like to at least understand exactly what is going on here. If you find any other bugs that you think we should look into for 6.10.4, please let us know. We don't have any plans for when to do the release yet, but we would like to be confident that we have waited long enough for any other bugs to surface, and to have time for 6.10.4 to be well-tested. Thanks Ian