Early 2008 Mac Pro + nVidia 8800: Never going to work?

Question

This forum is littered with threads about early 2008 Mac Pros with the nVidia 8800 card - none of them positive.
I was unfortunate enough to wait for Apple to release such a machine and buy it. Graphics performance is dire given the hardware available. The machine routinely crashes with the window manager hang problem (the user interface just locks up, yet network services etc. still work), in the way familiar to anyone blighted by this particular bug; just run the Folding@Home client on your machine if you want to experience the joy. Or screensavers, sometimes, so I've had to turn those off. And I've had to turn off monitor power saving too, because I too suffer from the 'monitors sometimes don't wake up' bug. And of course I can't sleep the machine either, because firmware upgrade or not, it's still not reliable. And after all this, still the machine crashes.
SSH to the machine; try to restart cleanly; even 'sudo reboot' won't restart it. Apple have achieved something I've never seen out of any Unix or Unix-like operating system, ever; the kernel is unable to kill its own processes.
There have been no indications from Apple that I've seen on these forums over several weeks that the problem is even being acknowledged, let alone tackled. Latest reports indicate that even the 1st gen Mac Pro owners are suffering if they install the 8800.
http://discussions.apple.com/thread.jspa?threadID=1460752&tstart=0
My machine rarely makes it through the day without a forced reboot due to the window manager hanging. I can't do any work on it. I can't rely on it. I can't enjoy it. I can't even use it for web browsing without fear of it hanging.
There seem to be no facts about this at all. So all I can ask for is opinions. Does anyone have any offering of hope that early 2008 Mac Pros might ever work properly with 8800 cards? Y'know, little things, like actually being able to handle graphics? Or sleeping the monitors? Or, heaven forbid, sleeping the whole machine? Or should I just send it back as unfit for purpose?
Yours, tired and exasperated... :-/

Answer 1

I posted this in some other blog (forum), I should have posted this here also but I hope this gives you and all with these problems hope!! I also ran some fish tank test some else posted to get the folding problem to happen and I can not get it to happen at all now, and since my 8800 went in I get NO LOCKUPS, SCREEN FREEZES, shaky blurry video when I boot, so far NOTHING, IT JUST WORKS!!!!!!!!
Now that I think about it the person who said to use the fish tank program had a bad 8800 and maybe you do also!! here is the link to that:
http://discussions.apple.com/thread.jspa?messageID=6965475&#6965475
I purchased my first mac pro early 08 2 months ago (amazon.com).
2 quad core 2.8's, 2 gig apple 4 gig OWC total 6 gig ram,2-WD raptors (1st mac 2nd boot camp winxp 32 bit), apple care.
I had all my problems with the ATI card (I always purchased ATI, never Nvidia, for all the PC's I built) a couple of times I bought the first ones out, these had all kinds of problems until good drivers that actually worked were released (usually 6-12 months after the release of the card).
So I try not to buy routers, graphic cards, etc.. for at least 6-12 months, but back to my 2600 card!!
When I received my mac the graphics would freeze, I did a lot of online reading only to find out the ATI 2600 was the problem, the cure was to hook up 2 monitors to the card (and that worked!!).
Then they came out with the firmware update, now my main monitor would after 2 days on a reboot be scambled (samsung syncmaster 213t, NEVER had ANY problem with it before on any PC I had, so I knew it was not the monitor) to fix the problem I had to either turn power off to the syncmaster or resetting PRAM (worked for a couple more days, then the same problem).
I called apple and they sent a tech out within days to replace the ATI card, the replacement did the same thing after a couple of days, so I called Apple back and they took a bunch of info from my computer (BTW not much at all loaded in the mac side) and said to call back in a week, so I called back a week later and they said they were going to exchange the card for either another ati 2600 or the Nvidia 8800, I said 8800 and a day later on a saturday I received it, swapped the card and NEVER HAD ANY PROBLEMS at all!!
So I don't know if the ATI card has problems with certain monitors or they are just poorly made (maybe AMD is mad with Apple that Apple did not use AMD processors).
I have read others that swapped with the 8800 and their problems went away also!!!!
Maybe some have no problems with the 2600, but I would not recommend it to anyone, if you can avoid the 2600 GO WITH THE 8800, the drivers will get better (and the 8800 will eventually outperform the ATI)and you will not be sorry.
Apple is awesome, they are 2nd to none, their is no other company like this anymore that I have dealt with in a long time (not just because they gave me a 8800), like I said in the beginning of this post I always purchased ATI cards and would have kept it if it would have worked but 2 doing the same, ATI [AMD] has lost my support until they prove otherwise.
I recommend Mac's to everyone now!!
good luck and let me know it any of this has helped!!!!!!!!!!