The lack of a working chat room option has me thinking it's time to start planning on our next major site upgrade. We're on 4.7.10 right now. We started off on some sub-version of 4.6. We need to move to 5.x, at least. Luckily, our current default theme, Amadou, is available for 5.x. Here are all the Drupal themes (you have to have a drupal.org account to filter the list by version).
Drupal 6 is already out, BTW. So, we're behind, as ever. :)
I'll have more details, scheduled downtime, etc., in the next few days.
The guys at Lullabot have a screencast walking through the process of upgrading from 4.7 to 5.x. I used one of their vids the last time I upgraded. So, I trust them. :)