by deathmeter » Sun Feb 28, 2016 4:11 am
It doesn't happen often, but once every 48 hours or so, the server restarts to keep things fresh. Now, 8,000-12,000 people are trying to log back into the same server at the same time, that's going to cause a few problems. The server recognizes your attempts to join, but currently can't handle the load and then promptly puts you back at the login screen.
Also, you can always check the status by checking the Nostalrius homepage and scrolling down a little bit, server status and the population is always there.