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Firefox is unbearably slow after updating to version 27

After updating to Firefox 27 all webpages take a few dozen seconds to several minutes to load. When loading a webpage Firefox's status displays "connecting" and the CPU … (læs mere)

After updating to Firefox 27 all webpages take a few dozen seconds to several minutes to load. When loading a webpage Firefox's status displays "connecting" and the CPU gets maxed out with 95 to 100% of its cycles taking by Firefox.

The computer is older so it is a little slow but Internet Explorer 8 has no trouble opening the webpages and neither do other computers on the LAN so it is not a network issue. I have tried restarting Firefox, disabling add-ons, deleting add-ons, disabling hardware acceleration, restarting the computer, and reinstalling Firefox after wiping every trace of it and its user data from the hard drive and registry.

CPU: AMD Athlon 2800+ 2.08GHz RAM: 1GB OS: Windows XP Home Edition Service Pack 3 32bit


Comments by a forum moderator.
(Modified April 30, 2014 12:11:58 PM BST by John99 ) ~J99
Rather a long thread so I will add some comments here where easily seen.

 Modified June 18, 2014 6:08:41 AM PDT by John99

Stillet af hj21c1yg for 7 år siden

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Can't restore previous session - lost all of my open tabs

I have the most recent version of Firefox (29, I think) and when I just went to open my browser, my previous tabs were all gone. I have opened Firefox at least twice sin… (læs mere)

I have the most recent version of Firefox (29, I think) and when I just went to open my browser, my previous tabs were all gone. I have opened Firefox at least twice since I updated to the latest version and everything has been fine. The option to 'Restore previous session' is greyed out. I have tried going to the sessionstore.js and click on 'Previous Sessions' but it was empty. I tried to go into this folder again and received the follow error:

Script: c:\users\(name)\appdata\roaming\mozilla\firefox\profiles\goa9m6ih.default\sessionstore.js Line: 1 Char: 11 Error: Expected ';' Code: 800A03EC Source: Microsoft JScript compilation error

I had about 20 tabs open and am just sick that I lost them all.  The startup for FF is still set to 'Use my tabs from previous session'.  Help!

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Firefox memory leak causing slow and stuttery performance

So recently my Firefox browser has been leaking memory like crazy going up to 1.7 GB in used RAM. It starts off fine when I first open it, but progressively gets worse ov… (læs mere)

So recently my Firefox browser has been leaking memory like crazy going up to 1.7 GB in used RAM. It starts off fine when I first open it, but progressively gets worse over time, making scrolling a choppy and painful task. This started with version 28.0 but I've since upgraded to 29.0 and the problem persisted. I've done hours of research on the problem and have tried all the following solutions, to no avail:

- Turning off hardware acceleration/smooth scrolling/auto scrolling - Creating a new profile - Completely uninstalling and reinstalling Firefox - Running it in safe mode (still lagged, even in safe mode!)

Has anyone found any real solution to this problem?

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How can I prevent Firefox from automatically updating?

Hello, I am trying to prevent Firefox 28 from automatically updating to Firefox 29 (on OSX 10.7.5). I have the option "Never check for updates" checked under 'Update' in … (læs mere)

Hello,

I am trying to prevent Firefox 28 from automatically updating to Firefox 29 (on OSX 10.7.5).

I have the option "Never check for updates" checked under 'Update' in the 'Advanced' Preferences. I have "Automatically update Search Engines" unchecked. I have uninstalled Firefox 29 completely using two separate uninstall clean-up kits and emptied the trash before re-installing Firefox 28... Yet every time I finally re-arrange, customize and re-sync Firefox 28 back to the way I like it, I restart my Mac and Firefox 29 rears it's over-drawn, bubbly, space-wasting, UN-SYNCED, ridiculous tabs on top nonsense user interface.

I've tried to work with Firefox 29 but the new SYNC simply does not work and that's a deal breaker. I need the changes I make on my mac to be reflected across the other two systems on my desk (one WinXP, one Win7) and vice versa. When I try to sync on FF29 it takes me to a page to log in and then refuses to recognize my email and password (which I have thoroughly confirmed on my other systems as correct).

Can you please help me prevent Firefox 28 from automatically updating to Firefox 29?

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how can I change my encoding to Unicode(UTF-8)?

I have recently updated to firefox29. I need to change the encoding to Unicode(UTF-8) to read my emails in my own language. I cant see the UTF-8 choice in encoding part.p… (læs mere)

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I get no sound on Vine or Instagram. Why?

I can't get sound to play on any videos on Instagram & Vine. The videos play fine but sound will not. I have no sound issues on any other websites besides these two. … (læs mere)

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I've done the following to try and fix the issue with no success: Checked my mixer to make sure volume isn't muted. Cleared my cache. Updated plug-ins.

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Firefox 29 is painfully slow

What happened with Firefox 29? It is PAINFULLY slow. Sometimes switching between tabs takes a matter of seconds. Have a video running and FF often times out when switc… (læs mere)

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Not running a slow or overloaded system by any means. Something is very wrong with this update.

Any idea how to fix this or degrade to FF 28, which worked amazingly well?

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G'day, Yesterday I updated Firefox to which ever is the most current version (29) I have always had adblocker on my Firefox and it normally works and yesterday it was wor… (læs mere)

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The first thing I did, as Ive heard that folk can get adverts from malware, I ran a security check of my system and it was all clear, no issues what so ever, so what I am wondering is if adblocker itself is needing updating or if there is something I am required to do ect.

Many thanks, Jim

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Please help

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