I bought an Alfa AWUS036H (chipset RTL8187L) and I can crack perfectly with the old drivers but I can't connect to any wireless network (with both drivers, the one that comes with BT4 and the one that I used in BT3) !!

I do:
/etc/init.d/networking start
/etc/init.d/NetworkManager start
And the globe (network manager) stays green. I create a new wireless connection with everything, globe disappear and appear another "thing"... But it cant connect, the other thing that substitutes the globe stays there and it says (Device: wlan0 state: Disconnected).

Do you know why??
am I forgetting anything?

(sorry the bad English)