I have NAM-2 installed in 6500 chasis.some times It does not analyse the traffic and shows the error msg "error communicating with RMon daemon". The issue rsolves by reseting the module but not always.
NAM application image version: 4.0(1a)
Maintenance image version: 2.1(5)
NAM Daughter Card Micro code version: 220.127.116.11 (NAM)