Yesterday I had a kernel panic. When I turned the Mac Pro (~3 months old) on again, it chimed twice after the startup chime. I looked this up and it means incompatible RAM... http://docs.info.apple.com/article.html?artnum=58442 That is very strange since I have added no third-party RAM. The only RAM in here are the 2 gb that came with it from Apple. This is only the second kernel panic I've had, in both cases they were when I had Parallels open. Don't know if anyone can make sense of the panic.log but here are the tops of both them: this one ends with then the second one is and it ends with So what should I do? Should I reseat the RAM and run memtest? How could I be getting the "incompatible RAM" error if this is the RAM that came with it? There was no flashing LED either. Also, that doc from Apple says that I shouldn't hear the normal startup chime...but I did hear it. And two sounds I heard weren't just beeps, they were chimes.