Return from session bean takes ~60 seconds

[kratosh]

Hi,
I run a jboss server on a production machine in cluster, with changing load of 2-50 concurrent users.
I encountered a situation where a simple method that usually takes not more than 2 seconds, takes from time to time about 60 seconds.
I put a debug line just before a session bean method does "return ...", and after the service call invocation. Only this return process took the whole 60 seconds.
Any idea what can cause such problem?

[syedtaj]

Change the logging to trace and see whats happening.

Regards

[kratosh]

Hi,
I will do that maybe for a short time when it happens again.
But does anyone have any idea what it can be? did anyone encounter such problem?