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On Ubuntu 11.10, my Firefox freezes on Sites like Blogspot, Google, Ubuntu Support or Mozilla... I don't know why it happens, but it happens every time and I don't know if I should reinstall the whole System. Can someone please help me?

Here is what I did before this happens: Downloaded Opera Browser (also doesn't work, like epiphany or any other) and then when I was downloading 5 Torrents at once it happened, Firefox froze, but since there it does freeze every day on Various sites.

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closed as off topic by jrg, Marco Ceppi Feb 3 '12 at 0:51

Questions on Ask Ubuntu are expected to relate to Ubuntu within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

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Could it be Flash? –  Lekensteyn Oct 24 '11 at 15:14
    
Might also try disabling javascript and/or using the NoScript extension/addon. And try firefox -safe-mode if you haven't. –  belacqua Oct 24 '11 at 18:57
    
This question should instead be filed as a bug report, and as such is off-topic, thanks! Instructions here. –  jrg Feb 3 '12 at 0:35

2 Answers 2

Try reinstalling firefox or thunderbird.

I sounds like something wasn't installed properly which could lead to these problems.

If the problems don't occur with firefox in safe mode, then try disabling the ubuntu firefox modifications addon.

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This Kind Of Thing is why I'm now using Chrome. I'm personally using official Google Chrome, but you can get chromium from the PPA which is an open source project.

For some reason (some specific reasons actually, but is probably a bit out of scope for the discussion here) Firefox has always been somewhat problematic with laggy GUI issues on GNU/Linux-based systems. It's been improved over the years, and isn't very noticeable when you have a small number of tabs or first start, but it quickly gets out of hand in my experience, where I have several tabs open to Google applications and other "Web 2.0" web app kinds of things. I'm the kind of person who doesn't like to reboot or quit my browser and restart unless I have to, so the less leaky the browser, and the better it can recover from bad pages, the better.

I wish I had a magic wand, but "switch to Chrome or chromium" is probably your best bet, honestly. It's still not perfect, but at the very least the UI is lightning-fast compared to Firefox and you can get an idea of what is eating all your memory and cpu by pressing shift+esc which lets you see a breakdown of what is in use by each tab.

It also helps to install Flashblock Chrome or something similar to keep ads and such from taking over your system resources.

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