We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

REALLY SLOW after installing Norton Security Suite v4.0.0.127, especially with Flash sites/functions (5-min delay)

  • 1 baphendule
  • 16 zinale nkinga
  • 8 views
  • Igcine ukuphendulwa ngu skutflut

AnonymousUser
AnonymousUser
more options

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

http://

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 == http://

All Replies (1)

skutflut
skutflut
more options

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....