Hi, I have 2 dual 1.25 MDDS and overclocked both to 1.5GHz. I was running one machine just fine, wasnt running the other as I hadnt gotten RAM for it yet. So I decided to switch out the 2GB RAM from one machine to other in order to test the 2nd machine that I had yet to use. It booted up very slowly in about a minute compared to 30 seconds with the 1st MDD I was using. Then OSX froze and I restarted twice. Again slow boot times and freezing. Finally got Safari open and went to a youtube video only to recieve a kernel panic. Now when i try to boot I get the bong/chime but then no video.... Some suggestions would be helpful. What could be causing this kernel panic? P.S I havent added new thermal compund to either CPU since I overclocked them (I will in the future, right now I'm just testing the machines) but I really have a hard time believing that the CPU would kernel panic without even being warm or running heavy programs.