The server is back up after it's longest outage. Unfortunately I had no money to pay the hosting bills so after a while my account got disabled and the server became unreachable.

I also had hardware problems with the local part of the server, as a result minor part of the database was recovered after critical failure, it's not yet entirely fixed so most probably validator will mark some of the results as invalid. Since it's already late night here, I'll fix that tomorrow, together with the WUs marked as timeouts.
It's also possible that I'll be changing the server location, I'll post more info tomorrow.