I've searched both Errata/Bug fixes and solutions database with no luck.

We're running 6.1 with NFS across two boxes - one server, one client.
Each box is on the same subnet and plugged into the same switch.
ping and traceroute routinely produce 0.2ms access times between them.
Hence, I don't think that communication between the boxes is a problem.

However on the client we continually get messages

nfs: server XXX not responding, still trying
nfs: server XXX OK

as well as

nfs: task ##### can't get a request slot.

When I say continually I  mean every 2-3 seconds or more.  The
screen is full.  At any rate, I'm trying to find if there is
a bug, or if there are outside influences which could cause
these problems.