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.
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.
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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.
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).
- Don't make any changes on the Safe mode start window.
- https://support.mozilla.org/kb/Safe+Mode