REALLY SLOW after installing Norton Security Suite v220.127.116.11, especially with Flash sites/functions (5-min delay)
Comcast, my ISP, switched me from McAfee to Norton a few weeks ago. Ever since, Firefox is much slower, impossibly so with sites that use Flash and/or launch a new browser window (including using Control-N in Firefox menu). It LITERALLY takes 5 whole minutes for the new window or Flash dialog box to appear after clicking. This does not happen when using IE (which I hate to use, but have had to return to).
URL of affected sites
Uninstall Norton, get you own security software. You do not HAVE to use what the ISP provides free. I use Avast AV pro, Sunbelt personal firewall, Webroot Spysweeper, and run Malwarebytes occasionally to double check for spyware. Have not had a problem in over 6 years, and none of the Norton bloatware slowdowns. Just my humble opinion....