World of Warcraft Black Screen Crashes

Just installed a new GTX 285 (evga) and I'm getting black screen crashes during gameplay usually within 15 mins. The monitor loses signal. Tower lights and fans still working but a hard reboot is required. My old GTX+ 9800 worked with no problems for 1 year. Before that I had 2 GTS 8800's sli'd with no problems. This problem only occurs playing world of warcraft and only after I installed the new GTX 285. Bioshock, Fallout 3, Crysis and COD all work fine. Thousands of posts regarding this issue but no solution. Wow blames nvidia and nvidia (evga) blames wow.

Things i've tried:
New Drivers
Old Drivers
New power supply (corsair 750w model# CMPSU-750TX)
Turned down video settings/resolution
Removed SB Audigy and used onboard sound
Increased VC fan speed.
Checked fans/GPU and CPU temps
Increased memory voltage
Downclocked the VC (decreased crash frequency - the only thing that helped)
Updated motherboard chipset driver (nforce)
Replaced power strip/Direct from wall outlet
RMA'd the card (i'm on the third one)
Tried 2nd PCIE slot
Updated Direct X
Swapped VC into 2 other systems (one of which was a fresh XP install)
Closed background programs
Checked the event viewer for clues
Removed mods/deleted cache/wtf folders
System File Checker
Wow repair.exe
Windowed mode

I'm at my wits end. Anyone else having this issue?

My Specs:
Intel Core 2 Duo E8600 (3.33 Ghz)
Asus P5N32-E SLI Motherboard (680i chipset)
2 G Corsair CM2X1024-6400C4 Memory (2.1 voltage) 4-4-4-12
Western Digital Caviar Black 1TB 7200 RPM 32MB sata
EVGA GTX 285 sc edition (01G-P3-1285-AR)(underclocked to stock settings 648/1476/1242)
Win XP Pro SP3 w/ all updates

i am having the exact same problem and I'm using an 8800 gts on an evga 680i SLI mobo. I've had the black screen where my monitor is on standby and my computer is still running twice now and its weird cause upon restarting (manually) it either immediately does it again, or doesn't revert to it for the entire day of play. Sometimes it does it on startup from an entire day of being turned off so I know its not the heat. I've done several possible fixes like the first post and its still no good. Today I got another issue that came up regarding the game freezing and looping different noises. I havent changed anything in my system for over a year now and this problem only occurred after installing 3.2.2