It's probably down to the PXE-code/driver of the machine.
I would suggest updating the BIOS - a BIOS update includes updates (if there are any) for LOM's (LAN On Motherboard) firmware. It's possible that this has already been identified and fixed by your OEM.
If not, you need to go and talk to your hardware OEM - it'll be down to something they've done with the NIC (not necessarily intentionally, obviously) - the stage is too early for us to have been able to do much other than say "download this".
LANDesk EMEA Technical Lead
Yeah, I figured as much :). A BIOS update was my next step, and if that turns out to be the problem I'm not sure we'll make an effort to upgrade unless othe problems arise. Too many out in the field. I was hoping there might be something configurable on the PXE rep side but it makes sense that it's hardware.
You're the man, worked like a champ!!! The new .0 file increased speed dramatically. Great tip!! Thanks