how iti turn "What's new" back on?

[ataraxia]

Some how I seem to have turned the "What's new" facility off.

My users can see the "What's New" button but when they click on it, they get this message saying they do not have access:

 you do not have permission to access this page. This could be due to one of several reasons:

Your user account may not have sufficient privileges to access this page. Are you trying to edit someone else's post, access administrative features or some other privileged system?
If you are trying to post, the administrator may have disabled your account, or it may be awaiting activation.
This may be a special message area where you may post messages in existing threads but

What's New seems to work for me (Administrator) but not my users. This would appear to be permission-related. I can't seem to find any setting that turns this on or off. Does anyone have any idea how to fix this?? There's got to be a little switch somewhere... Thanks!