I suspect not, but could this be a samba related problem He went on to post his smb.conf file. Anders C. Thorsen asked for more detail and went on to offer some possible causes 1. You have map to guest enabled 2. When logging on as root, it's not fully recognised as such, mapped to guest, and the behaviour you describe will occur. When Chris posted the extra info Anders ask for and this left Anders unsure of what the problem was.
Nobody seems willing to explain what they mean by 'complicated' however.
If so, can you please either send in a gdb stack backtrace, or a debug level 10 of the log before this error message. That ended this version of the thread. Fileserving seems to be stable, no problems with joining the domain. All I'm looking forward to is the auth system rewrite. The only thing we came across were some string overflow errors when handling the favorites of the profiles.