During our pre-deployment processes for the 9.2 patch (scheduled to go out over the next few hours), it looks like something went _slightly_ wrong and as a result, new games are not starting. This will likely result in you getting stuck in some form if you are trying to play right now.
We're aware of the issue and it should be fixed up shortly, but worst case will be sorted after the patch is deployed. That release is scheduled to start in approximately 1 hour from the time of this post (6:00am AEDT).
Really sorry if this has messed up your early morning LoL fix!