It's depressing to read through this thread. I'm very sorry guys...
Some of you seem to have excellent applications and I feel surprised that such solid credentials didn't guarantee at least one spot. I have to say that professors and admissions committees are very opportunistic in the selection process and it's never possible to know how they'll treat your application even if you're brilliant.
Perhaps some of you can try looking beyond American schools? If you have an MA or MS, some European schools can be good options (they don't accept those with only bachelors degrees). Further away, there're some excellent research programs in Asia, where the economy is less affected and funding opportunities are abundant. In fact, some programs in Asia are attracting top-notch researchers these days with great grants and research projects so working with these people can be extremely promising for your future as well.