[Samba] Kernel Panic saving a file via samba to an overquota account

[Emidio Augusto Arantes]

My samba server panics (and crashes) periodically (even under no load) and "current process" usually indicates "smbd".

It seems to happen when saving changes on a file of an overquota account share (from a nfs mounted file system). 
When samba is sharing only local file systems it doesn't seem to happen (at least never happened :-)
Does anybody had the same problem and found a way to fix it? 

The server OS is freebsd 6.1 and samba 3.22.

Thanks for any help!

Emidio