The old sacrificial machine has been in use for several years, and has been used in numerous projects.
This is a picture of the replacement machine. It is a quad core 2.3Ghz with 2 gig ram and removable hard disk tray. We swap hard disks a lot when testing different distros, the removable disk tray makes it an easy job to do.
Here is the new sacrificial machine in use testing kfreeBSD Debian.