We are using JRun 3.0 as our JSP Engine. Whenever a jsp page is changed it and saved again it starts throwing Class cast exceptions. If however we restart the default server it gives proper results. I think the reason is primarily due to the Jsp's being cashed. Is there a way by which I can prevent this from happening? We have configured a connector which connects to The web server which is IIS 4.0 on an NT server and hence the jsp's are stored in the IIS's doc root.