Sounds like profile problems to me. You could try Firefox again, but reset your profile first: https://blog.mozilla.org/nnethercote/2013/02/22/reset-firefox-i

Sounds like profile problems to me. You could try Firefox again, but reset your profile first: https://blog.mozilla.org/nnethercote/2013/02/22/reset-firefox-is-wonderful/ https://blog.mozilla.org/nnethercote/2013/02/22/reset-firefo....