Here's /var/log/daemon.log from the problem system, which is basically all network-manager logs. There is definitely a failure to associate with SSID 'njs2' somewhere in here, and I believe there are some failures to associate with 'UCSD' too.
** Attachment added: "n-m logfile" http://librarian.launchpad.net/4716612/daemon.log.gz -- flaky association with wireless access points https://launchpad.net/bugs/64931 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
