I have created an intense web application that makes sure of many frames. One of the frames at the bottom of the app refreshes every 30 seconds, this does 2 things...

1.) It keeps the user's session alive even if they are not at their PC
2.) Refreshes the user's data/checks in the database for new information and pops it up to the user...

Now on one or two of our employees browsers, sometimes the page that refreshes just turns white and doesn't reload, thus the user loses session information and is logged out. Or the page just gives a page cannot be displayed error, with no other error detail...

The browser is handling large amounts of data, including an ActiveX control that has all the user's email in a certain folder. So there can be megs of data in the ActiveX control.

Why should some computers have this problem, but not others? How can session variables just be lost? I checked in the Event Log and the asp.net worker process is definately not restarting...