"network-manager roams to (none) ((none))" has already been reported as bug #291760, however it appears to be a harmless message related to losing the connection to the AP (at least with the latest ath5k driver).
-- Some drivers take too long to associate (Was: network-manager 0.7 always asks for WPA passphrase) https://bugs.launchpad.net/bugs/292054 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