We are installing several 1140 series in our school and I have been told that we can run different encryption levels on the machines. I started imagaing the machines with wpa2 AES. We then started using the newtwork set up in windows XP and it would only allow us to use WPA with TKIP. Everyone seems to be connecting, but on our event details we are seeing machines failing to associate with the interface of the AP. We are having some machines that are logging in faster then others. I am trying to track down to see what the encryption on these machines are.