Problem with bonded (teaming) NIC's on RHEL 4.0

[Anne Moore]

Hi all RH experts, 
 
I have bonded my two GIGI speed nic's on my red hat enterprise 4.0 server.
They were (before the bonding) running at 1 GIGI speed. However, now that
they are bonded together, it runs at 10Mbits. I used this procedure:
http://www.cyberciti.biz/tips/linux-bond-or-team-multiple-network-interfaces
-nic-into-single-interface.html
 
I get the 10Mbits result when running the command mii-tool bond0. 
 
Any ideas what the problem here is? Or why I'm only getting 10Mbits now? 
 
Thank you for your assistance.
 
Anne