Hi guys, I have a 2009 Mac Pro with 12 GB of Apple installed RAM. It's been running fine overall, but last night I ran into a memory problem. I have 6 x 2 GB sticks installed in slots 1,2,3,5,6,7. I started up the MP and a memory configuration adviser screen came up and said the memory sticks were not in the correct order. The computer only showed 10 GB or RAM in the About menu. I then clicked on More Info and it showed memory slot 7 was empty. So, I restarted again with the same results. I restarted a 3rd time and this time the memory adviser came up again and said that all memory was installed correctly. I then had the full 12 GB showing up. I ran Apple Tech Tool deluxe and it's quick memory test said it passed. Has anyone run into this problem? Again, this is Apple RAM that was pre-installed by Apple. I recently applied the 10.0.3 update if that has any bearing. Thanks for any help/advice.