You can kill the processes with "kill **** = PID number"
I should be able to check your drivers with a bit of googling, but this may help . http://wireless.kernel.org/en/users/Download
And you can run an injection test to see if it is working following aircracks direction http://www.aircrack-ng.org/doku.php?id=injection_test
An additional feature is the ability to test connectivity to airserv-ng. Once the basic connectivity test is completed then it proceeds with the standard injection tests via the wireless card linked to airserv-ng.
aireplay-ng -9 -e teddy -a 00:de:ad:ca:fe:00 -i wlan1 wlan0
-9 means injection test. Long form is --test.
-e teddy is the network name (SSID). This is optional.
-a 00:de:ad:ca:fe:00 ath0 is MAC address of the access point (BSSID). This is optional.
-i wlan1 is interface name of the second card if you want to determine which attacks your card supports. This interfaces acts as an AP and receives packets. This is optional.
wlan0 is the interface name or airserv-ng IP Address plus port number. This interface is used to send packets. For example - 127.0.0.1:666. (Mandatory)
Hope this helps.