Apple slips in its retroactive support for Wi-Fi Protected Access: The recently released AirPort 3.3 software for the Apple Macintosh operating system includes WPA support for Apple's original AirPort Card, an 802.11b device that's practically identical to the WaveLAN/Lucent/Agere/Proxim Orinoco Silver and Gold.
Apple is offering this update only for users of their newest Mac OS X 10.3 (Panther) release. With other AirPort software and firmware updates, the company did not push out software for releases older than the last six to nine months.
To my knowledge, and please correct me if you have other details, this is the first release of a WPA upgrade for a pre-2003, pre-802.11g Wi-Fi card.
According to information provided to me a few months ago, it's also clear that the original AirPort Base Station does not have the capability to be upgraded to WPA compliance.