Whither 802.11a in Linux?

Revar asks: "My local net admin recently installed an 802.11a 54Mbps wireless network. Under Windows, the speed is great and at 5Ghz, it has much less interference then the 2.4Ghz 802.11b wireless. The problem is, I cannot seem to find any 802.11a PCMCIA cards that have Linux or MacOS X support. Are there any, or is no-one actually working on this?" Whenever new hardware is released patience, when wating for Linux support, is a necessary virtue.