Originally Posted by Ron
Do you have cookies enabled or have the website listed as "Always Allow" under "Managed websites"? Plus, check to make sure you have "Remember me" checked at the website when you enter your username and password the first time. See this tutorial about cookies as a reference about this. Cookies
Also check to make sure that you are not manually or have some third party program deleting all of your cookies on the computer. This will remove the login information.