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I had a problem with my WIFI not connecting to a WPA2-PSK (AES) netgear router. I would try to connect via the Wicd Network Manager and it would eventually say "Bad Password". This is a confirmation of your "first" fix. I have not had intermittent connectivity yet. As you suggested, Wicd Network Manger -> Preferences -> Advanced Settings Tab -> WPA Supplicant Driver set to "None".Thanks for the fix!
I had to try a different card. I re-imaged the SD card that came with the hackerbox at least 3 times with no luck. First time with another SD card and it worked right away.