WPA2 home network, Lenovo X201, Intel 6000 (according to lshw), both /etc/network/interfaces and wicd were failing. Disabling NetworkManager fixed it. I didn't have to apt-get remove it (though I probably will now); I just moved aside /etc/init/network-manager.conf and /etc/init.d /network-manager and rebooted, and now wpa2 works fine from /etc/network/interfaces.
-- Wireless connection frequently drops [deauthenticating by local choice (reason=3)] https://bugs.launchpad.net/bugs/548992 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs