> "an ample amount considering the dual core CPU"
Probably true. 1.4Ghz? I have a 2.6Ghz imac from 2009 which cost the same, but came with a 24" screen and an ipod touch. I've bumped the memory to 8Gig and I'll probably swap the 640Gig disk for an SSD at some point. As far as I can tell, the kit is getting worse.
I like (liked?) Apple kit, but I'm very disillusioned with their business practises. There isn't even an option for 16G on an MBA. If you're going to solder the stuff on, I want to future proof it. I have a couple of drivers for buying Apple - MS Office on a Unix box and time machine. The first of these might be moot with LibreOffice/vmware player and the second is looking like a $60 driver option if I move from Snow Leopard.
The only upside is that the system is so intractable, I rarely break it with fiddling. :p
My 3930k hex-core with 32G RAM is looking quite cheap at the moment. It's also sitting in a MacPro case :D