Session Timeout

[eluser]design132[/eluser]
Again, thank you so much for taking some of your time to help me figure this out. I am running ExpressionEngine v2.8.1 - Build Date: 2014031.

But I just saw this just now:
Changed in version 2.8: Replaced user_session_ttl and cp_session_ttl. If either override had the value 0 in config.php prior to the 2.8 update, they were replaced with $config['expire_session_on_browser_close'] = 'y'; during the update.

So I'm wondering if that is what's causing them to be logged out all the time (keep in mind they're not closing their browsers... it's more of an idle logout issue).