We recently converted a pure JSP/Servlet app running on Tomcat to Tomcat/JBoss 3.2.2. We have found that every so often the request object seems to just disappear, causing users to get kicked from the system at worst, and at best for errors like "object such and such could not be found in any scope". In the case of the later, simply refreshing the browser will clear up the problem.
Does anyone have any idea why this would be happening? We never same this problem when running with Tomcat exclusively.