Actually, from all I have read, the original MBA is not fully capable to take advantage of the 64-bit kernel. The rev B/C with 9400m are fully capable with all features of Snow Leopard to boot. The factor that I saw is that it will not install by default and will have to be forced to boot into 64-boot. The originals cannot run it because of the Intel graphics, but the new ones have all the features available as 9400m does OpenCL, and takes advantage of all new technologies in Snow Leopard.
I even read an entire article from someone who said they were using the 64-bit kernel on their rev C MBA. It all seemed legit to me... I think the information that is getting everyone concerned is that only xServe version auto selects 64-bit kernel. I think we will all have it figured out a few weeks after Snow Leopard is released. I have already read some random fury from posters here stating Apple is full of BS and nothing will really be running in 64-bit if the kernel doesn't. I actually think that is incorrect also, as the apps are fully taking advantage of CPU/Memory too even when kernel is running 32-bit. That means the OS can take advantage of all the extra RAM capacity too...
We will see, but I think your thread implies something that's not true and just speculation of negativity based on some quick to accuse.
I hope for all of us the absolute best works out for us whether the kernel is 32 or 64-bit. If 32-bit, there's absolutely a reason for it, we will just have to discover why and what we can do, and if whatever we do just confirms our ability to run 64-bit whether we need to or not.
