I've done some checking on this and the problem with chat seems to be our chat module hasn't caught up to the latest version of Drupal. What this means is we have no way to show who's in chat at any given moment.

The good news is chat still works, it's just not as easy to get to and you won't know if anyone is in there unless you log in.

I know I'm missing my chat fix so I've found a way we can use it until the module is updated.

Just click on this link. Chat Room

It will open in the same window and ask for your login info. Just use the same login you do for the site.

Update: I created a temporary link in the sidebar to open chat in a new tab or window depending on your browser. I can't fix it so it shows who's online but people can get their chat fix.