We are running Microsoft Small Business Server 2003. I have added the Fedora Core 3 client to the domain, however attempts to authenticate using windows accounts fail.

The event log on the 2003 Server show a kerberos authentication failure, 537:

Logon Failure:
Reason: An error occurred during logon
User Name:
Domain:
Logon Type: 3
Logon Process: Kerberos
Authentication Package: Kerberos
Workstation Name: -
Status code: 0xC000006D
Substatus code: 0xC0000133
Caller User Name: -
Caller Domain: -
Caller Logon ID: -
Caller Process ID: -
Transited Services: -
Source Network Address: 192.168.0.14
Source Port: 1786

Any ideas would be helpful