I've experienced this a few times now already.
After the game i'm stuck at the "The game has ended" popup, even if i click the OK button a few times it remains stuck.
On mobile sometimes it would take quite a while for it to react as well
PS: OMG this forum is ANCIENT, is this PHPBB? i remember setting this up in like 2007 or something
Love it
Usually that means that a server has been restarted. A simple CTRL-R will usually allow you back into the "new version" of the server.