I played a few days and many hours on a single card with no problems, other than a lower FPS on planets and in stations.
Then the beta dropped and I went back to SLI and again had no problems over a few days and many hours.
Today I tried the regular game (SLI) and it crashed in less than an hour.

So it looks like it is a bug and they have fixed it, or at least it will be fixed when 2.1 drops.
