They're working on it. Until then, there's this: Axiotron : Homei wish Apple would make a tablet laptop. That would be sweet.
To me, there's just no legitimate reason for an OS to require that much memory to run. What could it possibly be doing that would require that much memory, on top of all the hard drive space it takes up? I'm sure you can agree there's simply no need for it. And 'as fast as xp' isn't saying much. XP is ok, but speed isn't exactly it's strong suit.As for Vista being slow or a hog, well yes it does take a little more power then XP in stock trip or setup, but what many people don't understand is you can turn off and configure Vista to actually be as fast as XP. Most of Vista increased ram and processor usage is all for the "eye candy" this can all be adjusted to reflect what performance you would like to see, all the way down to a basic looking XP style format.
On the max memory for 32 bit applications, yes this is correct and depending on the hardware your max usage is from 2.8-3.5gb of ram, this is more then enough to do anything you would like to as well.