Saw the same thing this AM using Opera. Opera was working fine yesterday. FF and Iron both worked fine at the same time Opera was acting up. Checked both my router and modem, both up just fine when it was doing it. This would have been around 6 AM Eastern time.
Gary
side note... usually play in either Iron or FF, just in the process of testing both Opera and Safari. Also didn't even have to get into a game before I saw it, happened while on client screen. Hit retry and it went away until it came up again, but could change pages within the client, so I was connected.