mkdir("file", 02750) does not create a file with the set group id bit set. chmod("file", 02750) does. Further more, mkdir(2) violates its man page specification by not creating set-gid directories if the parent directory has this bit set. I suspect these are related. Cheers, Mike. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/