Hey forum. Recently Firefox has been acting weird. For eg if I'm on Facebook and try to post a YouTube link, the thumbnail stops appearing now. Or I can no longer access a page on certain websites, thinking those pages are offline but then I try again on Chrome and it works there. So then I clear out all Cache and Cookies on the browser, and it's OK again. But only for a moment before everything goes to crap again. I can't go on clearing the browser every 15min like that so, what could I do about this ? Also it's possible some Ad-ons are causing a bit of this but it isn't clear: Adblock Plus, Popup Blocker namely.