Was DHCP not working for you or did you have no network access at all? I thought the 10BaseT hub trick was for when your empeg didn't like a 100BaseT network and wouldn't see it at all?
Well, to be honest, I didn't feel like sniffing the network to see if any dhcp requests were coming from the empeg - I just put it into a 10bT hub, and everything cleared up. I do know that if I put a static ip address in the empeg, it will work on my home 10/100 switch.

I've had way too many problems with various 10bT devices not behaving on theoretically autosensing switches, and have a little 4 port 10bT hub on my desk at work and at home for just this purpose.

-jk