Some users since being updated to 2.6.0 cannot display the available conference rooms. The "Browse conference rooms" dialog says "Browse conference rooms - null" and displays the following list of rooms but none of ours.
Client Control Manager
User Search
Socks 5 Bytestreams Proxy
Publish-Subscribe service
JingleRelayNode
Spark Updater
Public Chatrooms
Broadcast service
All of these state "n/a" for "occupants"