Yes and no, I suppose. Here's how it has played out:

- iMac B had its first out of the blue kernel panic.
- About 2 or 3 weeks later, iMac A started getting kernel panics almost immediately after startup, all the time. That's what most of this thread has been about.
- Within a day or two of iMac A freaking out constantly, iMac B had another during-use panic.
- Within a day or two of THAT happening, I walked in on iMac C sitting at a post-Netflix episode screen with a KP grey screen up in front of it.

iMacs B and C haven't been experiencing multiple panics, but the fact that they happened at all so close to iMac A completely losing its mind is what made me suspicious. I can't say that they have been fixed on B and C as they have never been a constant problem like they are with A.