samba - May 2003 - Slow samba access from Mac OS X 10.2.6

Hi,

I'm running samba 2.2.3a-12.3 on Debian Linux (i686).  The network is 
100Mbit switched and I can ftp data off the server at 9Mb/sec.   If I 
use either the Finder GUI under Mac OS X or mount manually via 
Terminal, and then try to copy a file I get less than 64k/sec!  I don't 
ever remember having much better speeds than this while using the 
various versions of Mac OS X.  Windows users can access the server with 
no problems.  A 600Meg file will take several days for mac users - all 
mac users seem to have this problem with my server (5 of them) - but 5 
mins. for a windows user.

Interestingly copying files from windows machines works as expected - I 
can copy a 600Mb file to my mac in 5 mins. from a WinXp machine (via 
smb).

I suspect there's probably something wrong with my samba config, but 
not sure what.  I've played with settings - to little effect - and 
searched the net without finding anything of use.

If anyone at all has seen this and/or knows what the problem/solution 
is, I'd be most grateful.

Many thanks,

James
(My samba config if it's of any use)
[global]
         workgroup = WINCHESTER
         netbios name = CRAY
         server string = %h server (Samba %v)
         interfaces = eth0 127.0.0.1
         bind interfaces only = Yes
         security = SERVER
         encrypt passwords = Yes
         password server = 172.16.0.10
         passwd program = /usr/bin/passwd %u
         passwd chat = *Enter\snew\sUNIX\spassword:* %n\n 
*Retype\snew\sUNIX\spas
sword:* %n\n .
         username map = /etc/samba/smbusers
         log level = 2
         syslog = 0
         max log size = 0
         debug pid = Yes
         large readwrite = Yes
         min protocol = COREPLUS
         deadtime = 5
         socket options = IPTOS_LOWDELAY TCP_NODELAY SO_SNDBUF=4096 
SO_RCVBUF=409
6
         load printers = No
         dns proxy = No
         wins server = 172.16.0.11
         invalid users = root
         hosts deny = 172.16.16.16
         hide unreadable = Yes

[homes]
         comment = Home Directories
         read only = No
         create mask = 0700
         directory mask = 0700
         browseable = No

[public]
         comment = Public Read Access
         path = /home/public
         invalid users          guest ok = Yes

Just to let you know I've solved the slow mac client problem thanks to 
Ben Low.

The issue was with this line:
socket options = IPTOS_LOWDELAY TCP_NODELAY SO_SNDBUF=4096 
SO_RCVBUF=4096
Removing SO_SNDBUF and SO_RCVBUF fixes the issue.

I think this was in the default configuration - or the default for 
swat.  Perhaps it shouldn't be?

Hope this helps anyone else with complaining mac users.

James