This vendor has sent me a total of 6 machines, all are BSOD, 3 were XP, the latest 3 Windows 7. That said, I have another of their machines (same software) that has been rock solid this whole time. and I have about 20 other machines in same room that aren't having any issues.
The crashes have happened while running the software, and did not happen when I ran memtest for several days.
The machines do have a Matrox ConvertDVIPlus attached.