I'm attaching syslog where you can see NetworkManager associating with
the wifi router but failing to do the 4-way handshake:
Oct 7 00:06:44 machados-laptop kernel: [43718.678051] ipw2200: Firmware error
detected. Restarting.
Oct 7 00:06:44 machados-laptop wpa_supplicant[869]: CTRL-EVENT-DISCO
This just happened to me on Ubuntu 10.10 Maverik Beta..
I was using the net for more than 10 hours, made downloads. All was working
fine until the wireless connection dropped.
Network manager was trying to bring the connection up again and asked me for
the WPA/WPA2 password. The password was cor