samba - Oct 2003 - Can't mount Windows shares!

Hello everyone, I have a Windows Server 2003 box and a RedHat 9.0 box. 
I installed the RH9 rpm, samba-3.0.0-1.i386.rpm

Whenever I try and run this command;

mount -t smbfs //machine/share /root/smb_mnt -o 
username=administrator,password=mypass

I get this error;

cli_negprot: SMB signing is mandatory and we have disabled it.
26595: protocol negotiation failed
SMB connection failed

I have tried everything and I can't seem to get a single Windows share 
to mount.

I can login and connect to share via;

smbclient //dh1/lance -UAdministrator

Any help would be greatly appreciated!

Cheers,

--
Travis Bell
Hosting. Simplified.
www.datahive.ca