I can't understand why anybody would buy a Centurino unless they're absolutely sure they will never do anything other than surf the net with their wi-fi.

We have 802.11b at the office and I have it at home. The thing is 10 to 20 percent the speed of wire. It's very annoying to run a program that resides on the lan through "b". The only thing holding back the "g" standard is certification of the standard. Then Intel and Cisco will adopt it immediately and you'll have to go buy a new card. The "g" standard is five times faster than "b".