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Firefox very slow and repeatedly hangs after upgrading to 7.0

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  • 100 have this problem
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  • Last reply by snoz64

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I upgraded to Firefox 7.0 this morning. Since updating, Firefox is running excruciatingly slow. When trying to load webpages in new or existing tabs Firefox will hang indefinitely, and I need to restart Firefox to get it working again.

I have tried clearing cookies and cache, and starting Firefox in safemode with all add-ons and plug-ins disabled, but neither have helped the problem.

Running Windows 7 64 bit, 4GB RAM

I upgraded to Firefox 7.0 this morning. Since updating, Firefox is running excruciatingly slow. When trying to load webpages in new or existing tabs Firefox will hang indefinitely, and I need to restart Firefox to get it working again. I have tried clearing cookies and cache, and starting Firefox in safemode with all add-ons and plug-ins disabled, but neither have helped the problem. Running Windows 7 64 bit, 4GB RAM

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I may have found a solution to this problem here (well, at least Firefox has been working again for the last few hours, not sure if it will prove to be a long term solution or not).

As it says in the linked article, type about:config into the address bar, find network.http.max-connections and change its value from 256 to 48.

I have absolutely no idea why this works but it seems to. According to my resource monitor Firefox still seems to be using a ridiculous amount of memory and disk, and my cpu fan is still going crazy, but at least websites are loading again!

Does this fix the problem for anyone else?

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I reduced max-connections to 48, this indeed improves the loading speed but FF 7.01 is still slower than FF6 Using Win 7 SP1, Intel 8600 3.33 GHz , 4 GB mem

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Have had terrible problems with running firefox for the last month or so with slow page loading and frequent hang ups.It got so bad I loaded Opera but much prefer firefox overall. Tried this fix today as above - " type about:config into the address bar, find network.http.max-connections and change its value from 256 to 48" - and it has solved all my problems. It is now going really well and have had no crashes. Thank you very much.

Modified by snoz64