Upgraded to El Capitan last week but having real issues with Safari on my iMac 3.4GHz Intel Core i7. We have 50 M download speeds but when trying to load pages have the following issues: Type in address and press return and then nothing happens. No progress bar appears. The page just hangs. A page will start to load but then will have many of the items missing or incorrectly positioned on the page. Will get a message say the web page server isn't responding. I have an old MacBook Pro running the same upgrade, on the same network and when I got to exactly the same pages they load up easily. Has anyone else had this issue? Is it possible to reinstall Safari from scratch?