Some time on November 10th, we'll be moving PRPNet from the datacenter in Lithuania to RackSpace. That will involve:
Shutting down the old server
Changing the DNS entry to point to the new server
Backing up the old server
Transferring the backed-up database files to the new server
Populating the database
Starting the new server
It should only take an hour or two. The current DNS entry for PRPNet has a five-minute expiration, so the new IP should propogate during the downtime.
There shouldn't be any user action necessary.