igb issues

[Daniel Braniss]

hi,
I'm trying out a 4way Dell PowerEdge C5125/AMD server with onboard 
	Intel(R) PRO/1000 Network Connection version - 2.3.1

when running FreeBsd 8.3 (from sometime around Nov 2) all is ok.
with latest (at least Fridays') 9.1-PRERELEASE it's getting 'constipated'.

It seems that NFS writes slowdown to a halt, and so I'm getting 'not 
responding' errors.

I am using the same kernel on different hosts with out any problems,
even with Intel(R) PRO/1000 Network Connection version - 2.3.4

Any ideas?

danny