hi every one
i have a problem with my wifi card
i am using edimax-ew7318usg
and runnning backtrack 3 final
i have make all the instruction putted in
aircrack-ng.org/doku.php?id=rt73

when i launch airodump-ng rausb0
some time i pick AP but the most time i will pick nothing even my own AP
can any one help me please
(the usb is new i run it with xp and it run very well)
thanks