Seeing as how the op has already returned his nav and got the clarion installed, there were a few (myself included) that would support him in a class action. However, I don't think anyone else is so inclined to start the process over.
I do not think that 'count your losses' is the correct attitude. Companies shouldn't be pushing this crap to the public. As long as we accept it, they will continue to do it. As the previous poster says, instead of just complaining on a forum no one at pioneer could care less about, we all need to contact them with the specific issues that each of us are experiencing. Hopefully they care enough about their existing customers to release a new update. If not they will just push it to end of life and start on the next version to rip us off with. I will be doing my part, but seriously, this is a very lackluster product and I don't think I will keep it around long enough to see a new update.
It's too late to save me as a future customer for pioneer in-dash navigation systems. I know I have their lowest end model, but their highest end model was just as unimpressive. Even for the low price I paid, I feel ripped off and taken advantage of as a consumer.