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.

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

Having more than four tabs open causes Firefox to become non-responsive, lagging for sometimes up to 5 minutes and can't close it without task manager.

  • 2 replies
  • 4 have this problem
  • 1 view
  • Last reply by cor-el

more options

If I try to open a fifth tab, or try to pin a tab Firefox mutes, or whites out and the mouse freezes. When this happens the title bar states that it is, "unresponsive." I either have to wait until it starts moving again to restart it because I have no close button, and this takes up to 5 minutes and sometimes even more, or I have to crash it using the task manager (ctrl + alt + del) when it takes longer. Also, any time I try to pin a tab it does the same thing with a single pinned tab. If I try to open firefox after a crash, it immediately becomes unresponsive for an even longer time.

If I try to open a fifth tab, or try to pin a tab Firefox mutes, or whites out and the mouse freezes. When this happens the title bar states that it is, "unresponsive." I either have to wait until it starts moving again to restart it because I have no close button, and this takes up to 5 minutes and sometimes even more, or I have to crash it using the task manager (ctrl + alt + del) when it takes longer. Also, any time I try to pin a tab it does the same thing with a single pinned tab. If I try to open firefox after a crash, it immediately becomes unresponsive for an even longer time.

All Replies (2)

more options

Hi,

As the first thing I would recommend updating to firefox 12. Updates include bugfixes as well as security patches. You may find that solves your problem.

If not check back and I'll try to help.

more options

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).