Already on probation, Symantec issues more illegit HTTPS certificates
arstechnica.com
arstechnica.com
https://groups.google.com/forum/#!topic/mozilla.dev.security...
However, a number of browsers now have experience with distrusting CAs only after a certain cut-off date while still accepting old ones (and some even make an attempt to prevent the CAs from bypassing that check by backdating certificates), so Symantec is certainly treading on thin ice.