As I'm writing this, I'm using a wireless connection over my Level 1 wnc-0301usb.
This device finally works ! (with compat-wireless-2008-05-03).
I've been playing quite some nexuiz and surfing the web so far without any disconnects.
Speed seems to stay at 54MBit/s (finally i can get rid of the network cabling on my floor).
Thx 4 the good work. (and plz don't break it again