I did a remote install of OS X onto a MacBook Air today for the first time. I’d just had to install a new hard drive in it so I had to use the CD in my MacBook Pro to do a remote install. A little reading lead me to believe this might take 4-5 hours. Perhaps Apple have dramatically improved this somehow since the article was written, or perhaps it was due to the more efficient Snow Leopard versus Leopard, but this only took less than two hours.  To make it even more impressive, I was doing this over an old 802.11g network using an old Airport Extreme. Pretty neat.