Can no longer login to forums using Firefox
A couple days ago I found that I wasn't able to login to the forums. So I restarted Firefox with all add-ons disabled. Still no joy. I then assumed the issue was that PIA had disabled login because they were doing some forum maintenance over the holiday weekend.
Then this morning I tried logging in with Safari and presto! No issues.
There appears to have suddenly developed an incompatibility between these forums and Firefox. Could this have something to do with the release of Quantum? Seems doubtful.
Mac OS X Sierra 10.12.6
Firefox 56.0.2
Then this morning I tried logging in with Safari and presto! No issues.
There appears to have suddenly developed an incompatibility between these forums and Firefox. Could this have something to do with the release of Quantum? Seems doubtful.
Mac OS X Sierra 10.12.6
Firefox 56.0.2

Comments
Not sure why, but sometimes the prefs.js file gets corrupted and needs to be replaced. So what I have started doing is saving a copy of my prefs.js file. If it gets corrupted again, I just delete the bad one and paste the copy of the old one in its place.
@sn0wmonster
I imagine if I used a JS-enabled browser, I might get a few from Google as well.
Did you notice the creation dates on the cookies? Is it possible that the cookies were being regenerated for different sessions and just didn't get removed/expire and that's why you had 40? I don't understand how it would be generating 40 cookies. I'll hold off on escalating to tech support until I can get your response, but you've definitely got my attention! *hates cookies*
Also, 3.0 is out! https://www.eff.org/deeplinks/2017/11/panopticlick-30
Full disclaimer: using this service literally tracks you as part of its functionality!
This experience prompted me to be more mindful of cookies. With the typical browser it's an all or nothing deal. You can either forget about them and go for convenience, or you can elect for them to be deleted every time you quit your browser. I chose the convenience of not having to re-log back in to my email accounts, re-verify my computer to bank accounts, etc. Not the secure option, I know. But what a PITA otherwise.
A little research today culminated in my installing Cookie. Super easy to configure and whitelist only those few cookies you really do need. The rest are deleted, including supercookies, on browser quitting or even on a timer. So far it's working great.
In that menu you can also "Clear history when Firefox closes" - I check all the boxes.
You could also install the add-on Disconnect (or similar) to cut the third party rubbish.
I also use Disconnect, which does a commendable, but not perfect, job. If what I'd been running had been a viable solution I never would have found myself in this predicament in the first place. But then I count it all as a blessing in disguise. It compelled me to dig a little deeper.