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Thread: Firefox Gets Slower / Less Responsive During Use

  1. #1
    Join Date
    Jan 2008
    Beans
    214

    Firefox Gets Slower / Less Responsive During Use

    Hello all,

    I have two completely different systems running Ubuntu 11.04.

    Firefox version is 10.0.2

    When I first open Firefox for regular browsing, it is fast without any problems.

    However, after maybe an hour or so of use and opening/closing tabs here and there, Firefox gets slower. I'm surprised that I couldn't find another thread on this issue; some were similar but still off.

    First system runs an Intel CPU and Intel graphics card. Second system runs an AMD CPU and has an ATI graphics card. I am using the standard graphics driver on the computers - I'm not using the proprietary one (although this really doesn't have anything to do with the issue).

    Browsing is fine and it just gets slower as I try to switch tabs or click on links, type in boxes, or submit forms.

    It has been doing this for weeks now - and I attribute it to the last upgrade of Firefox myself. There has been at least one kernel update since the problem occurred, and when upgrading to the newer kernel, the problem continued.

    This only affects Firefox - nothing else.

    Just wanted to see if anyone else has seen this problem as well.

  2. #2
    Join Date
    Aug 2008
    Location
    Brazil
    Beans
    12,497
    Distro
    Ubuntu Studio 12.04 Precise Pangolin

    Re: Firefox Gets Slower / Less Responsive During Use

    Most likely that Firefox is leaking memory. Check if memory usage goes too high when the problem occurs. You can do that with System Monitor. If it does, try Firefox in safe mode for a while.

    Code:
    firefox -safe-mode
    If the problem goes away in safe mode, then most likely an extension is causing the leak. You need to test them individually to find the culprit.

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