I am having issues with safari 9.1.2 YouTube video are not loading properly, Yahoo groups are causing issues when I try to click links as nothing happens. All cache have been cleared, history cleared, latest Adobe Player installed, no extensions installed. As a last resort, I am thinking of formatting and reinstalling unless anyone can suggest something else for me to try. I followed some instructions on resetting Safari but it did not help. Can Safari be trashed and reinstalled without the big format ?