Looking at our logs, it looks like a Java security patch was automatically applied earlier on this evening and this would explain one of the disconnects you were seeing since the chat server will have been automatically restarted.
Other than that we have no outages whatsoever so I can only think this was an internet peering problem or an issue with an upstream IP transit provider somewhere.
Sorry for the difficulties, but it's nothing to worry about. For future reference, you can check the Echo Internet systems availability using this link:
http://www.pingdom.com/reports/6b8e81i3z3mq
The above will tell you instantly if there is an issue with our systems. You'll see from the historical reports that we have maintained industry leading uptimes so problems are extremely rare.