I'm posting this from a Kubuntu-lappy with a DLink DWL-G650 (hardware revision C3) PCMCIA card. It's an Atheros-based card and works well with the madwifi drivers. In fact it's a "super atheros" chipset whatever the hell that is - I think it means you can get 108Mbps under ideal circumstances with a supported access point (assuming the planets are aligned correctly and the phase of the moon is right and you hold your tongue just so, and....).
From what I've read, the 'Super 108Mbps' is channel bonding in the wireless world. Your card and AP try to talk on two non-overlapping channels at the same time to double your bandwidth.
Of course, that means fewer channels and less bandwidth available for your neighbors....unless you forgot to enable security on your AP. :)
--Keith
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