[Samba] Very Slow!

[Brian McGrew]

System info:
    Red Hat Enterprise Linux Server release 5 (Tikanga)
    Kerlen 2.6.18-8.el5 SMP x86_64
    Samba version 3.0.23c-2
    Eth0 && Eht1 bonded to bond0, 2Gbps.

    /etc/samba/smb.conf attached below...

I¹m seeing very slow transfers from Samba....  I¹m not sure how else to
describe it.  If I try and copy a 4GB DVD image from the server to any
Windows box (XP, 2003, 2008, MacOS) it estimates more than 4 hours to copy.
However, if I FTP to the server from any given client I can move the whole
file in less than 2 minutes...

I¹m not a Samba expert, so anything is helpful at this point!!!

-brian

[global]
    netbios name = mvppvt125
    realm = MACHINEVISIONPRODUCTS.COM
    security = ads
    preferred master = no
    encrypt passwords = yes
    wins server = 10.0.0.119
    workgroup = MVP
    password server = *
    server string = Dell PowerVault Server
    log level = 3
    log file = /var/log/samba/smbd.log
    max log size = 50
    winbind use default domain = yes
    winbind nested groups = yes
    winbind separator = +
    client ntlmv2 auth = yes
    socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
    username map = /etc/samba/smbusers
    template shell = /bin/bash

[filevault]
    comment = File Vault
    path = /filevault
    browseable = yes
    writable = yes
    create mode = 0777
    force create mode = 0777
    force directory mode = 0777

[data]
    comment = MVP Data
    path = /data
    browseable = yes
    writable = yes
    create mode = 0777
    force create mode = 0777
    force directory mode = 0777

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