Today i got an Alfa AWUS036H and finally packet injection works.
But there is, ofcourse, 1 problem. When I run aireplay-ng with this command:

aireplay-ng -3 -b <BSSID> <interface>

The program runs, but when it succesfully got ARP requests the IV's increase with 40 #/s and this only lasts for about 10 seconds.
Then all the konsoles I run at that time freeze. (airodump-ng and aireplay-ng)
So I cant collect any more Data and Beacons.

I left; airodump-ng <interface> ; running to search for my AP, but all the other AP's including mine dissapeared.
When I close all konsoles and unplug/plug my adapter everything works fine again, untill I start the ARP request.

Any help?