Running 3.2.15 on RHEL 5.4 64-bit. Joined the domain with no issues, able to look up id's with no problem. Windows clients within the domain are able to use defined shares. However, when trying to look up trusted domains, or when trying to access shares from clients not in the domain (for example, using smbclient), the following errors show up: rpc_api_pipe: Remote machine <DC name here> pipe \NETLOGON fnum 0x8 returned critical error. Error was NT_STATUS_PIPE_DISCONNECTED winbindd_dual_list_trusted_domains: trusted_domains returned NT_STATUS_PIPE_DISCONNECTED rpc_api_pipe: Remote machine <domain name> pipe \NETLOGON fnum 0x8 returned critical error. Error was NT_STATUS_PIPE_DISCONNECTED NTLM CRAP authentication for user [DOMAIN]\[username] returned NT_STATUS_PIPE_DISCONNECTED (PAM: 4) I'm at a loss here. Googling didn't help, neither did the #samba channel on freenode. Looking for help from the community at large. Thank you!