samba performance with svn?

I think this has been discussed here previously but I don't remember
any definitive conclusions so I'll ask again. We now have some
Windows users with samba-mounted disk space and large svn checkouts
and commits are very slow compared to local disk access. Are there
any samba server settings that would be likely to help with the speed?

-- 
    Les Mikesell
     lesmikesell_at_gmail.com