Comment 16 for bug 27867

>As i understand this has been fixed in Firefox as stated at

No, prima facie not. The linked bug states it's 'fixed' because the option isn't there anymore, yet the option is there in the latest nightly so that's wrong.

>Nope. The Preferences dialogue has been reworked since, and the "offending"
>option isn't even present anymore, so it's now impossible to screw things up ;-)
>Bug fixed then...

Maybe you're confused because the option is now 'allow sites to...'?