CoolVibe writes "For months, the DragonflyBSD fork of FreeBSD was maintaining compatibility with the existing FreeBSD-STABLE branch by using the 'FreeBSD 4.8-STABLE' name internally. In a few commits, Matt Dillon changed all the names, and DragonFly is finally sailing under its own banner. Things that DragonFlyBSD already has that FreeBSD-STABLE doesn't are, among others, application checkpointing, variant symlinks (not unlike Domain OS), Light-weight kernel threads, a more efficient slab-allocator, a multithreaded network stack, and the rcNG system."
The best book on programming for the layman is "Alice in Wonderland";
but that's because it's the best book on anything for the layman.