Hi there, I've got a server running Ubuntu here that is authenticating with our Windows AD server for terminal logins and share access. The terminal logins work 100% every time and that's not an issue, but one of the shares is having problems. When I come in to work in the morning sometimes it will not allow access to the share. This doesn't happen every time, it's very intermittent. If I try and map the share to a network drive it pops up the username and password dialog and will not accept a valid user and password. If I navigate directly to the server using \\servername I can see the share, but when I attempt to access it it tells me that the group name could not be found. I've restarted samba to no avail, but it seems if I just wait a few minutes it'll all authenticate fine and I can access all of the shares. Also, I can access my user's home directory on the same server at the same time that the other share is failing. log.smbd has no errors, but log.winbindd says: [2007/06/18 08:41:52, 1] nsswitch/winbindd_group.c:winbindd_getgrnam(255) group ggWeb_admins in domain CMVHODOM does not exist The group certainly does exist as I can usually authenticate with it, and if I run `group` on the terminal it appears as a valid group. I've attached the smb.conf for your perusal. The share that's failing is [htdocs]. Thanks, Matt