There seem to be quite a few new errors coming up -

Start button stays grey forever
Intermittent 2002 "Lobby Sever Connection Problem"
Intermittent 'Failure to obtain Server List'
Character simply never appears without any error message
In the queue which counts down a couple times then booted with a 'World is full..' popup
and now being booted with 'World is full..' popup before your character shows up

Likely it's all tied to the inability of the server code to handle the number of incoming requests causing the client to timeout and malfunction at various points along the way. Until SE gets their act together to increase capacity, remove bottlenecks and streamline the code we'll keep seeing these types of connection failures.