We have developed a Java web application for Blackberry Tour. It works fine. But after browsing the application for sometime ( may be 1 hr), when we click on any links or buttons application sends us back to Login Page. And when we try to Login in the application, after authentication it takes us back to login page. But when we clear the cache and try to login again, application behaves normally.
Now the problem is we need to clear the cache too often else application behaves weird.