Discovered some problems with AirCrack-ng suite and Ubuntu 12.04

Since I already have Ubuntu on my laptop, I installed all the necessary tools to do my pentesting.
But when using Airodump-ng I discovered that I never managed to capture a handshake. I thought to myself that I just might be unlucky, but even after I tried with several computers, and several wireless adapters, I posted a thread on HackForums, where one user replied with: "Have you tried in BackTrack?"

Luckily, my desktop computer had a VM with BackTrack, so I tried. And guess what? I got the handshake in a blink of an eye.

I asked around what the problem could be, and some answered it could be NetworkManager, which puts the wireless adapter into managed mode again, which means I can't listen and capture the packets flowing in the air.

So I tried both killing and stopping the NetworkManager, and it worked, once.
Then I said, screw this. Installed BackTrack to a VM and deal with the problem some other time.

So when anybody have a solution to totally killing the NetworkManager, hit me up in the comments ;-)