tt, keep in mind that you are having a "checkerboard pattern" that is totally different from the "strange artifacts" Tyler and the rest of us have been hamming on the past few days. "Checkerboards" are almost always caused by something that can be cured, in contrast to these "strange artifacts". And like I said, your "checkboard pattern" is in Larry Pina's books and all over the web and has known cures. I posted those in detail for you in the AppleFritter thread. Regardless of how innocent or safe you think it is to keep you machine that way, I strongly suggest you make efforts to remedy the problem, in accordance with the advice given in that Applefritter thread. Because, once again, your "checkboard pattern" indicates a very different problem than the "strange artifacts" some others of us are seeing.

Tyler, your experience almost parallels mine in that (a) you have shown the ROM is irrelevant and ( B) you see those "strange artifacts" often. One the board I'm using now, I've swapped ALL the caps. All but 3 are dipped tantalums and the remaining 3 are electrolytics because tans don't come that big (at least, not in any store nearest to me). But despite my having done an excellent cap job with excellent caps, I still see those "strange artifacts" on EVERY SINGLE COLD BOOT. So in my case, caps are as irrelevant as the ROM.