try "sh nat" and see if that helps.

The Pix will allow you to enter both commands, but then you have to figure out how to route one IP to both interfaces.

I am having the same problem and my engineer recommended that I upgrade to 8.0.3. Don't bother, it doesn't help. I upgraded on Sunday, and by Monday, I had the same problem again. Apparently, it is a known bug and will be resolved in 8.1.1. I don't...