I've read many related threads to this, but I'm coming up empty on a solution that works for me.

This is a asus a53u, with the Atheros AR9485 wireless card. I'm running a fresh install of 12.04 64bit alongside windows 7. All recommended updates installed.

Network manager has no problem seeing my network, but never connects.

I've tried disabling encryption and power management per other threads but no change. I've also installed 'linux-backports-modules-cw-3.3-precise-generic'. Somewhere I read someone blaming IPv6 for issues, when I set IPv6 to 'link local only' as per the suggestion, I immediately show a connection, but without any internet access.

Any suggestions?