Problem with WmTNWeb

Hello friends,
We have customized WmTNWeb interface with new JSP pages according to our requirements. The problem is that when I try to search for some audit events, it is taking for ever. I don’t see any errors in the server log. It just doesn’t return anything.
Can any one suggest, what might be wrong?
IS: 6.0.1
TN 6.0.1
Database: Oracle 9i