Scott,since we have upgraded cabling on our network and transfer speeds increased a little bit, we are experiencing very often situations where the Intel PRO/1000 nics just stop responding and network dies for a while. Local console works, there are no more error messages other than (when the eth0 comes to a life again):
NETDEV WATCHDOG: eth0: transmit timed out
e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex
Petr, I need you to try something. Get ethtool 1.8
(sf.net/projects/gkernel) and turn off TSO:
# ethtool -K eth0 tso off
If you now longer see NETDEV WATCHDOG's, I have a next step. More on
that later.
-scott