Comment 6 for bug 1473088

You mean the ignore CA certificate checkbox? On my system it seems to work fine. If checked, it doesn't ever ask for a cert; in the edit connections window, under the wireless security tab, the "No CA certificate is required" checkbox remains checked; and there is no mention of CA certs in /etc/NetworkManager/system-connetcions/[NetworkName]. So this bit seems fine to me. What's bothering me, is that nonetheless it just doesn't connect anymore. I can't check if using a cert would make any difference, as my faculty doesn't provide one. But I assume Zacharias did test it both ways (CA and no-CA), getting same results.
It could easily be related to a kernel update, though. Or to a NetworkManager one, since this is happening on at least three differently branded cards: your Intel, my Atheros and Sacharias' Broadcom. And all three brands are VERY common, btw...