Got another machine going, and the CPU (2600K) folds fine, and when I had one GPU, it worked fine too.
Then I added another GPU and both are recognized, and appear to run, they both just sit there. I pause and start and they say "Running" for a while, then switch to "Ready". And nothing in the progress bar.
Both are Nvidia Quadro cards, one is an FX 380LP and the other is a new Quadro 2000.
Any words of wisdom?