session vaiables lost randomly

From: rich00 (rich00_at_discussions.microsoft.com)
Date: 06/11/04 

Date: Fri, 11 Jun 2004 13:00:03 -0700

i am developing an asp.net web based application using javascript as the server side scripting language. The application makes constant use of an access database and session variables. in a random way, the session variables are lost causing the application to break. The only software on the xp-pro box is iis, .NET framework, office 2003 and 3 com objects: aspmail, aspimage and aspsmartupload. There is no virus detection software.

Anybody have an idea why the session variables are randomly lost ?

thanks, rich