All of a sudden, I can't connect to YouTube using Safari. Can't be a wifi or local network issue (have tried from two locations, in different towns)...I'm able to connect using Chrome and Firefox, so the issue is isolated to Safari. I've scoured Google, trying everything imaginable: Emptied Safari cache (Develop > Empty caches) Safari > Prefs > Privacy > Removed all website data Double checked the DNS addresses in System Prefs > Network Disabled all third party extensions via System Prefs > Network (have since turned them back on) Apple Support website: Removed all third party extensions from both primary and hidden Libraries. Made no difference (they've since been restored to their original locations). This is making me crazy---having to switch browsers every time there's a YouTube video I want to watch is a hassle...not interested in changing from Safari to Chrome or Firefox for my daily workflow. Somewhere, there's a solution. Am hoping someone here knows what that is. Anyone? Anyone?