For anyone still reading this old thread, the server IS still running as we speak, despite the fact that the TRACKER (which merely shows the status of the server) is down. The tracker is undergoing maintanence, as the service blog states (always check that when in doubt).
The server is fine, and is on a steady rotation of six rounds of siege (each of the three maps repeated in two cycles) followed by a quick mayhem round and then all five CTF maps.
It seems the gametypes don't change properly unless I begin with a FFA map, so we'll continue to start the cycle with a mayhem round.
I have put in other alternate cycles that use Holocron FFA and some of the JK2 maps and the Bonus maps. I hope to get to use those again someday if people will finally download and install them!