The message about CVE-2009-3555 is meant for webmasters to make them aware that they need to fix their servers.
Firefox 3.6 versions can detect such a misconfiguration and displays a warning in the "Tools > Error Console".
I'm getting this error mesage when trying to respond to threads on two different forums. The problem started when my dsl modem died over the weekend and was replaced today by an AT&T service tech.
Yes, I'm having a lot of trouble posting to forums of which I'm a member. Specifically, I can't post to either Gearslutz or The Womb. YouTube streaming doesn't work. Streaming from other sites appears to be blocked as well.
Google Chrome allows both posting and YouTube. Firefox doesn't.
I am still having problems with Win Vista but not on XP with the same site. I still don't believe this is a problem with the webmaster implementation but a Vista/Firefox interaction. If this is a Support forum, are they monitoring? I really want to hear from the programmers whether this is being debugged or not, and any other information they need from us to expedite a fix. Running now 3.6.10 and Vista64 SP2.