Stop! (hammer time) If you want to continue playing on the minecraft server don't update your minecraft to 1.3. The server isn't ready for 1.3 yet. Players that did update to 1.3 can't connect to the server untill the server is on 1.3. There will be a anncountment when the server (and the new world) will be ready. The online minecraft will not auto-update untill the server is ready. It's uncertain if you can still download 1.2.5 from the online version when 1.3 is out.