Further to comments made in another thread, Samba 2.2.7a appears to limit the maximum number of Unix groups a user can have to 13 (NGROUPS_MAX - 3.) The cause appears to be Samba adding to the groups list returned by the getgroups() system call, such that a subsequent setgroups() call has the number of groups set to (# of groups + 3). For instance, my account has 12 groups; running truss against the smbd thread for my account showed it calling "setgroups(15, 0x.....);" For another user who has 14 groups, the call is "setgroups(17, 0x....);" - this fails with "Err#22 EINVAL", since 17 is greater than NGROUPS_MAX (= 16 under Solaris.) The difference of 3 groups may be environment/implementation specific. This behaviour didn't occur under Samba 2.2.0, so I suspect that one of the fixes to group handling mentioned in the Changelogs is responsible. Any ideas? Thanks in advance. -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Paul Taylor taylpm@si1.dod.gov.au