This other samba box was suddenly being _really_ slow (7 - 10 mins for a logon), so I went to investigate (15 miles away). The log had apparently 'filled up', so it was spewing errors to the console.

I suspect a resource is not correctly defined. What happens if you run testparm? Do all your services / shares pass? If they do, then it is probably worth looking at the Linux permissions on the shared folders. My suspicion is that one of the standard resources (netlogon, print$, if you use it) is playing up. The opportunistic lock break failure message you're receiving indicates that Samba is not relinquishing a resource it *should* have finished with. Netlogon is the most likely of these, but there may be others. Try changing the debug level assigned to samba - for instance, by doctoring the /etc/init.d/smb script and then restart smaba and try a few logins, while running tail -f /var/log/log.smb on an available terminal screen. This will give you a realtime view of what is happening and when. Maybe that way you can provide a few more clues.

Any ideas much appreciated. Anyone had this before? Are some of these messages normal?

Not in my experience. Andrew -- ******************************************************************************** E-Mail: aray@computerpark.co.uk ********************************************************************************