FYI,

I use my Empeg Mk2a with ISC-DHCP (and IBM's goofed up DHCP as well) and they both work dandy.

I have found MORE than one case of improper link-pulses sent by some brands of 10/100 switches that cause link negotiation problems.

I've used my empeg with the little 5port D-Link 10/100's with success, my Cisco 2924 works dandy (although I think I have the port set for PortFast so it brings up the link speedy without freaking SpanningTree getting in the way)

I would speculate it's NOT the DHCP client the empeg has. I've always had good luck with it. I would suspect the hub/switch. I've seen other problems with other devices and various brands of 10/100 autosensing switches.