Dont know the answer, but check health of system
- that you have no full partitions ie using df .
(could have overflowed logs etc)
- check with free that have free space ie at least
some spare swap
- Check with vmstat 2 , that plenty of idle cpu,
and that zilch in si,so columns (no swapping).
What does ifconfig and route -n show, and tcpdump when try
a ping on the lan from server to client (ie the reported failure).
Hope you fix it soon,
currently steve.houseman at * net