NetBIOS Slow Response
The ongoing response time for a connection is taking longer than the allocated amount of time set in the Expert Thresholds critical section of "Slow Response" for any session level protocol or application. This value is the sum of all identified events in the NetBIOS Events display.
The response time for an ongoing connection is graded differently than the initial connection between systems. The event is displayed when the percentage of slow response packets (by application and address pair) is above the critical value set in the Expert Thresholds.
Possible reasons for the event:
high network load.
the system that is being communicated to is too busy, or overloaded.
the connection is being made over an overloaded link (i.e. the router is slow to forward packets)