Hi all,
I am having the same problem here running Backtrack3 on an Acer Aspire One from USB live. My wireless is up and running as I can see and connect to networks in Wireless Assistant. I did manage to get Kismet working once lastnight after many attempts but haven't been able to since. I've tried running Kismet from the command line with the switches as Darren suggested above but still nothing, I have checked in iwconfig and its says wifi0 has no wireless extensions, the entries for ath0 (and ath1 and so on after multiple attempts of opening Kismet) all have info listed. There are also entries for Kis0 (and kis1 etc).
Any suggestions would be much appreciated... :)
Also - just to add after a few attempts of trying different things I get an error message which is quiet long -
The last few lines:
FATAL: Unable to create VAP: No such device
FATAL: Unable to create monitor-mode VAP
WARNING: wifi0 appears to not accept the Madwifi-NG controls. Will attempt to configure it as a standard Madwifi-old interface. If you are using madwifi-ng, be sure to set the source interface to the wifiX control interface, NOT athX
FATAL: GetIFFlags: interface wifi0: No such device