Running Minecraft in Debian/Ubuntu

Procedure

In Ubuntu, before installing anything: Install: Uninstall (if installed):

Debugging

If Minecraft does not start, make sure your browser uses Sun Java as Java Virtual Machine. In Firefox, write about:plugins to location field. This lists all plugins. Look for Java-related MIME types (e.g. application/x-java-vm, application/x-java-applet, ...). The Description column tells which utility handles this MIME type. It should be JavaTM Plug-in.

If Description is IcedTea, you should uninstall icedtea6-plugin it as explained above.