[Samba] Problems connecting win7 client to new Samba PDC

[Brandon Stepp]

Hey, I'm running the latest Ubuntu 12.04 Samba 3.6.3, I just want a 
simple PDC for authentication.  Client is win7 32 bit with latest 
updates.  The client can join the domain, but I can't log in with any 
users, it gives me "The User Profile Service service failed the logon.  
User profile cannot be loaded."  Looking at the log, I've found this:

"[2012/08/08 17:08:39.747592,  0] 
rpc_server/netlogon/srv_netlog_nt.c:976(_netr_ServerAuthenticate3)
   _netr_ServerAuthenticate3: netlogon_creds_server_check failed. 
Rejecting auth request from client CLIENTPC machine account CLIENTPC$"

Any ideas on what the problem is?