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Welcome back to Linux.Ars! Quite a bit has transpired in the world of open source software since the last edition. I don't have any code for you folks this time around, but there is a lot of excellent stuff in the pipeline and you will hopefully see some of it on the front page of Ars Technica in the next few weeks. I'm putting together a complete Python/D-Bus tutorial that will include some examples that leverage Gaim 2.0 and libnotify among other things. I'm also working on putting together coverage of Red Hat's big virtualization event. This time I'm going to be covering some assorted news items and exploring GNOME 2.14. As a special treat this month, I also have some comments written specifically for Linux.Ars by Mike Ferris, Red Hat director of security solutions, who talks about Red Hat's approach to integrated security and SELinux.