I have a Lenovo W510 that I'm using with Backtrack 5R1. Evertytime I run aircarck-ng start wlan0 it hangs and I get no info of the card. I need to CTRL-C to exit out of airmon-ng. The W510 has a Intel Ultimate-N 6300 built in adapter. I purcahsed a Alfa AWUS051NH and when I try airmon-ng- start wlan1 it hangs as it tries to start the Intel Ultimate-N 6300 and I can't use the new usb card. Does anyone know if I can get the Intel Ultimate-N 6300 to work or is there a way to bypass this card entirely?