Ubuntu 11.10 Oneiric Ocelot has released its first beta version for a few days, the final release will be put out 31 days later on October 13. Today, I just new installed Ubuntu 11.10 daily build in my machine. Unity becomes more comfortable. New LightDM is cool, it’s easy to change the log-in screen background. But as I know, so far there’re only two greeter themes: unity-greeter(default in Oneir