I have a .js file that is part of a web-application. The web application is deployed on tomcat. This .js file in turn calls a .html file deployed on jetty. This .html file is responsible for starting the cometd service, but when i run my web-app, firefox throws an abort message for this particular request. Also this is the first request that im sending to jetty. Strangely enough, when i paste the URL of that particular .html file(or its parent servlet) on my address bar in a new session, the URL gets loaded and when i start my web-app, firefox throws a successful 200 on that page(on seeing from firebug). This is a one client operation, this behaviour(of successful 200 on that page) persists for that particular client as long as firefox is not re-installed. Therefore, my web app loads that very page successfully for the client that has loaded that url explicitly from the address bar and I do not have to load that page from the address bar again till i do not re-install my browser. Can anyone explain what information is passed to the client such that it stays for that client even on deleting temporary internet files/cookies/browser restart/system reboot but not on browser re-install? Also, if possible, can anyone suggest a proper approach to follow so that i do not have to perform this work-around to get that page loaded on every client that uses my web-app?