The security warning was the alarming red one generated by Chrome, but for the Facebook site and domain. I can't tell you if it was for the root domain or www, and I'm afraid I do not recall the error. I get a bit confused with Chrome (because it has various levels of warnings for various types of things (the page itself, scripts, stylesheets, etc) and it doesn't help that I'm on the dev channel, but sometimes I get the full blown red warning, sometimes I get the red X through the https in the url bar and sometimes I get "Insecure Script was Blocked" which occurs strangely, when I receive notifications.

I honestly don't remember where I reported this before, it was not at the link you've offered above. I've got that bookmarked now. Like I said, if I have someone to contact or the whitehat link you mentioned, I will be sure to get a more detailed list of what happens when it occurs again.

Thanks.