Internal Server failure, NSAI Plugin. Cannot Continue

Friends,

I am posting this message hoping for a solution.

We have web application running on Iplanet 6.1 -> weblogic 9.2. The initial request hits the iplanet webserver and then the request is redirected to weblogic 9.2 server with the wlproxy plugin configured on iplanet webserver.

Our system architecture is simple, we don't have any cluster configurations on it.

User gets following error message sporadically, Interesting fact of this issue is that, part of the webpage gets this message (Message from NSAPI plugin) and while on refresh the browser error message doesnt show up:

Message from NSAPI plugin:

Internal Server failure, NSAI Plugin. Cannot Continue. Change Number: 755164.

Please help me with solution/debuging strategies if any for the same.

Thanks in Advance.

-DhilliP

[851 byte] By [DhilliPrasada] at [2007-11-27 1:45:43]