samba - Jun 2002 - locking/freezing on 2.2.4 across subnets

Here is my configuration:

USER ---> ROUTER ---> FIREWALL ---> SAMBA

I have about 10 people accessing this share:

[ftp]
        comment = FTP Directories
        path = /home
        browsable = yes
        writable = yes
        valid users = @csr,@system
        force group = csr
        create mode = 0664
        directory mode = 0775
        oplocks = no
        level2 oplocks = no

Anyone have any ideas or hints to fix this?

Thank you!

-- 
Terry Davis
http://approbation.org/