cPanel 4 will go down for a short period of time this morning while we move the existing data (well, re-sync it) to the new, huge mirrored Raid 1 Array. We are doing this because the existing drives are close to max, and we are about to roll out some huge plans which will include upgrading the existing customers on the server.
We will post up when its all done. We guess it will be down for 20 - 30 minutes.