I've not had any problems with my Atheros card. Considering all the compiling and manual loading I had to do with my last card, I think this one works great. YMMV.
Warning: 'madwifi' is not GPL-compatible; as such, it is illegal and will
taint your kernel.
Also, it works like crap. I need to restart my Atheros interface like 10 times
before it connects properly.