ok iam haveing a problem with airodump
i type the cmd's like this

airmon-ng stop

ifconfig rausb0 down

macchanger --mac 00:11:22:33:44:55 rausb0
that works fine then i type

airmon-ng start rausb0

it comes up ok

this is were i have the prob i type

airodump-ng rausb0

the screen changes to the sniff out network screen but no networks come up not even my own but i know its there because i checked it there in the wireless assitant on backtrack 3 it shows me mine and 4 others can any one help