if ur getting slow rate arp packets u need to set the rate
iwconfig <interface> rate "auto" ----auto usually works best you might have to set it mannually

example
my interface is wlan0
...

after folowing arc's guide everything went fine untill the make install i got bt4 on usb and i keep on getting this


Disabling ath_pci ...mv: cannot stat...

o succes with bt3
bt4 doesnt recognize the chipset but lets me monitor even though i cant connect to any wireless nets
4965 agn still working on it