Each time I load my server it "prepares the spawn" and if I don't have a seed specified it randomly generates a new world file on a new seed. If I specify the seed it just replicates the seed over and over. I've tried this with no plugins on the server so I know a plugin is not the issue. I've place gold blocks and upon restarting the server, they are gone even if I input a seed in the server.properties file. Inventories, ban lists, op, etc. all stay the same however, just any actual progress in the world is reset. I've tried this with 2 different builds. I've been changing the bukkit jar file to the name used in the example start.bat, should I be changing the start.bat instead to the full name of the bukkit build I'm using? I've not idea what is causing this and my friends (also running bukkit servers) never heard of the issue.