My point was that I am disappointed that they would release this card without proper support.
My understanding is that when Apple prepares to release a new machine, the hard drives that will ship with the machine are imaged en masse with the OS, iLife apps, etc. Any updates/fixes/optimizations that occur after the drives are imaged are essentially too late to the party. Even the build number for the OS on the restore disks may be slightly different than the build number for the OS on the hard drive that shipped with the machine, as the restore DVDs are manufactured after the drives are imaged and may have rolled in a few tweaks here and there.
Hopefully, Apple does some testing to insure that everything on the master image is working properly, but when it's all said and done it's altogether possible that a few bug(s) may be discovered afterwards once the machine is in the wild. And this particular Nvidia card is brand new for the iMac, whereas the current ATI card nowadays is relatively mature as it was previously the
only card available for the iMac - and it has gotten much Apple love in the form of multiple driver and firmware updates over the course of the Aluminum iMac's lifespan. Yet another ATI update was was issued upon the release of the 2008 ATI-based models.
So it's absolutely disappointing that the new Nvidia card isn't living up to it's full potential out of the box, apparently. But at this point it's still very very early in the game (pun absolutely intended). As more and more Nvidia-based iMacs make their way into the wild and start to see real world use with various software configurations, Apple will be able to, hopefully, find solutions for the Nvidia-based iMacs that address it's performance for all users - gamers and non-gamers alike.
But for now, it's kind of dilemma unless you're a gamer who spends 100% of your time playing games and almost nothing more. I'm not one to recommend a machine with the caveat that certain graphics issues will probably be addressed at some point by Apple for reasons that amount to little more than a leap of faith that Apple is potentially aware of these problems and is burning the midnight oil readying a blow-you-away fix to the Nvidia drivers/firmware. However, as noted above, the Nvidia graphics option is brand-new, and given the amount of driver attention Apple paid to the ATI card over the course of the aluminum iMac's history, I have a somewhat easier time turning my faith towards Apple - as opposed to say, Dell, which obviously only peddles hardware and nothing more - in that they can come up with a driver/firmware/OS fix and make it right. Bottom line is Apple takes responsibility for both the hardware and the software on your machine, and this situation highlights the fact where that's actually a good thing.
My advice: cross your fingers, cross them really hard, when you run software update over the next several weeks.