I'd hardly consider one machine (checked the support forums, no sign of anyone with similar problems) throwing kernel panics for one reason or another (we don't know it's the GPU or something else) enough reason to suspect another Nvidiagate...
It could be a vast array of other problems, like bad RAM, corrupted OS files, a program crashing or a third party driver failing. I thought my current machine was on it's last legs and had it sent in for diagnistics which turned up nothing. Turned out it was just Opera crashing and causing kernel panics, which stopped completely as soon as I switched to Chrome.
Another thing that speaks against another Nvidiagate is that when your computer fell for it (my machine at the time did), the screen would go black and you wouldn't get any kind of signal out of the machine until after you replaced the motherboard. It didn't throw Kernel Panics or anything like it, it just died.
