Not really, it's more for security reasons. A lot of our users never sign out, they'll just leave Updox running for weeks at a time. This isn't a great idea in general, to say nothing of the HIPAA issues.
The new functionality is that Updox will close itself if there is no computer activity in 2 hours. It's not just watching Updox; if you're using AC for 3 hours, Updox will stay open. It's when you get up and walk away and there's no keyboard/mouse activity.
Tobin, if you are still around, I noticed that Updox closes every night. Is this to allow updates?