Have you ever wanted to force your users to change there passwords, or have been asked by management to do this only to have to tell them that you can't?
Well, now you can with the 2010.2 release!
Simply create a group that contains all your users (I always recommend creating a group called limits for managing other group settings in a single place anyway, so this is just one more to add to that group.) and set the following new setting:
7776000 is 90 days in seconds. The PasswordTimeout field is in seconds and you can put any value you want there; I just choose 90 days in the example because that is a common timeout for most organizations.