Fowler has announced Buildix, a out-of-the-box ready build server, it has even a with Live CD (Knoppix)!

It's a live CD so will run just off the CD drive if you want to play with it. As with any of these live CDs you can then install it to your hard drive easily and you have the full server ready to go. There's also a VMWare Image.

Apparently it comes with a Continuous Integration Server, a SCM (subversion I would guess), a Issue tracking and a wiki.