Seriously? People started complaining about the 1900 being junk over a year ago. People started asking where the 8800 upgrade option was nearly that long ago.
Mac Pro buyers have been settling for the 1900, not embracing it, basically since it was released. Everyone presumed that they would just be able to upgrade to a better GPU in the near future. That ended up being false, and then even when they finally DO get an upgrade, it won't work with the existing systems.
Seconding this. I went so far as flashing another card to get some more intensive stuff done.
Then again, I put aftermarket CPUs into my Pro, I'm hardly the norm when it comes to being... patient.