First off, I love Snow Leopard.....Now It did not come immediately however. After first installing 10.6 My computer crashed, glitched, and froze all over the place. I was highly disappointed. I just kept submitting the trouble reports to apple and was preparing to roll back to to 10.5. But before I did that I decided to do a little research and see if there is anything I can do about it. Before the looking into, I did not realize that 10.6 booted into 32-bit natively, but was happy to see you can boot into full 64-bit still. I decided to try so DESPITE all of the people complaining about 10.6 not being truly 64-bit and others saying there are issues with the drivers when running straight 64-bit and that the 64-bit apps will open fine in 32-bit mode. Which, yes I understand 64-bit software can be run in a 32-bit OS, but to me, the math doesn't add up there. It would seem to me (and I could be wrong, I'm not a programmer or anything of the sort) that 64 bits inside a 32 bit area would severely weigh it down. Anyhow, back to booting into 64-bit mode. DO IT! If you are having any issues with the straight install of Snow Leopard, try the 64-bit mode. I'm not saying it will work, and I know people are complaining about lack of 64-bit drivers. But this works wonderfully for me. Since booting into 64-bit mode I have had no issues with lagging, no crashing, every application opens perfectly with no glitches and my printer works just fine (granted I had to download the 10.6 driver from HP). Heck, my battery life is even better; I'm actually getting the 7 hour charge time advertised versus the 4 hours I was getting in 32-bit more. So, go ahead, boot into 64 bit mode if your processor and bios allows. I can almost assure you everything will work fine. Not just fine, but better! The way that we all hoped that snow leopard would run. Has anyone else tried this and getting similar or different results? Can anyone tell me how to do the NVRAM edit so my system boots into 64-bit by default?