Whenever I log into my Debian Stable XFCE account, Iceweasel starts automatically.
"Application Autostart" under the "Session and Startup" section has no listing of Iceweasel or any other browser for that matter. Also, the "Save Session for Future Logins" checkbox at logout is never checked. Where else might there be a setting that I'm missing?
It must already be saved in your sessions cache.
If you are using version 4.10, you can clear your sessions cache via "Settings Manager -> Session and Startup -> Session tab". For earlier versions, you need to delete the ~/.cache/sessions folder while not logged in (Ctrl+Alt+F1).
Thanks! That fixed the problem. :-)