Hi, if Firefox slows down for all sites, switching tabs, etc., it can be time to exit Firefox and start it back up again. You can Exit using the menu: main "3-bar" menu button > Exit Or you can use the Restart button (not Refresh!!) on the Troubleshooting Information page: [[Use the Troubleshooting Information page to help fix Firefox issues]] On the other hand, if you are having problems with one specific site, can you describe the symptoms in more detail?