It is highly recommended to use a enhanced and patched driver from http://homepages.tu-darmstadt.de/~p_larbig/wlan/ instead of serialmonkey drivers.

ifconfig rausb0 down
rmmod rt2570
wget http://homepages.tu-darmstadt.de/~p_larbig/wlan/rt2570-k2wrlz-1.6.0.tar.bz2
tar -xvjf rt2570-k2wrlz-1.6.0.tar.bz2
cd rt2570-k2wrlz-1.6.0/Module
make && make install
modprobe rt2570

Make sure to load the driver with modprobe (not insmod).

There are reports of the aircrack-ng tools freezing and/or stop working.

Here are a few things to try:

• Try lowering injection rate
• Disable USB Legacy support in BIOS
• Use the newest kernel you can get
• Try to use a non SMP version of your kernel
• Use the newest 1.6.0 driver
• If the hardware totally loses its function: Use the oven method to get it back to life: http://tinyshell.be/aircrackng/forum/index.php?topic=233.msg6371#msg6371