The favicon cache of Safari often gets too full and causes performance issues. To empty this cache, quit Safari then open a new finder window by clicking on the Finder icon in the dock. Double click the "library" folder then open the "Safari" folder inside. Drag the "icons" folder to the trash and relaunch safari. If you do not want to have any saved favicons in the future, before relaunching safari, create a folder called "icons" to replace the icons folder that was dragged to the trash. Click on the new folder and click on the triangle next to privileges. Change them to follow these:
