Serverworks HE quad Xeon: strange network lockups

[Emil Briggs]

We just got a SuperMicro S2QE6 which is a quad
Xeon motherboard using the Serverworks HE chipset.
It has onboard ethernet (Intel 82559). After installing
Redhat 6.2 the Ethernet stopped working with the
message "eth0: card reports no resources"

with this and the 82559. What is strange is that the
network starts working again if you type something on
the keyboard. This is 100% repeatable -- don't type
on the keyboard and the ethernet freezes up with the no
resources message in a few minutes. Touch the keyboard
and it starts working again immediately.

I'm going to update the kernel and see if that fixes the
issue but it struck me as a rather unusual problem.

Regards
Emil Briggs