Thank you for your input, Aparna! Based on Chunk and Aparna's suggestion, I changed PermGen/Heap parameters to be 128M/256M. It worked well on the following day too. However, Friday's traffic is usually light. I am not sure these new parameter values would fix this problem.
Instead of keeping testing this production web server with every end user, I rolled this web server back to V.3.3.1, which had run smoothly for about 4 years. About updating to Tomcat 5.5. Since the cause is not unclear, and some Tomcat 5.5 hangups were reported as well, I don't think simply upgrading to 5.5 would fix my problem. Thank you all for your help and attention! - Monica --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]