/var/log/fallback.log:"2007:11:12-19:30:18 (none) [user:err] net: net_rpc_join_ok: failed to get schannel session key from server PENWEBDC.WEBDC.XYZ.GOV.UK for domain WEBDC. Error was NT_STATUS_ACCESS_DENIED"
DNS is fine, I had similar issues with 7.0.9 -> 11. Computer account is created, but "half" joined. Suspect this is related to post sp1 and may be something to do with the samba schannel options. I have tried changing these settings manually and forcing a join through the shell, but no improvement.
This is a native mode post SP1 Windows 2003 Domain Controller. I would have thought that the new join would be using ADS rather than RPC.
Jason