This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
Can you show the jsps you are facing this problem with? Have you tried on any other container like tomcat? I saw such exceptions in the logs but that was only when a user clicks another link before the current page was loaded completely.