cancel
Showing results for 
Search instead for 
Did you mean: 

Firefox 7 Unacceptably Slow. There seem to be many other users with this complaint, most mentioning Windows 7 platforms. I'm still on Windows XP 32-bit, and I also have the problem.

SOLVED
Highlighted
New User

Firefox 7 Unacceptably Slow. There seem to be many other users with this complaint, most mentioning Windows 7 platforms. I'm still on Windows XP 32-bit, and I also have the problem.

I made the mistake of accepting an upgrade to Firefox 7; suddenly I experience serious performance issues loading new pages. How do I get back to Firefox 5 or 6 ?

If that is not possible, how do I transfer my Bookmarks list over to Internet Explorer while you guys fix the performance issues ?

1 ACCEPTED SOLUTION

Accepted Solutions
New User

Re: Firefox 7 Unacceptably Slow. There seem to be many other users with this complaint, most mentioning Windows 7 platforms. I'm still on Windows XP 32-bit, and I also have the problem.

I had the same problem and found the solution here here

The solution involved going to about:config and changing "network.http.max-connections" line value from 256 to 48

11 REPLIES
Site Moderator

Re: Firefox 7 Unacceptably Slow. There seem to be many other users with this complaint, most mentioning Windows 7 platforms. I'm still on Windows XP 32-bit, and I also have the problem.

I am not noticing performance issues on Firefox running on an old XP.

Some users are getting hit by hangs or freezes, especially whilst syncing bookmarks. There is already a workaround for that and a proper fix will come in a later version of Firefox. see http://blog.bonardo.net/2011/09/30/is-your-firefor-freezing-at-regular-intervals

You may downgrade to Firefox 3.6.23 that is for now still supported and secure. It is not recommended downgrading to Firefox 5 or 6 they are not secure. See

It is relatively easy to transfer bookmarks between firefox and IE

New User

Re: Firefox 7 Unacceptably Slow. There seem to be many other users with this complaint, most mentioning Windows 7 platforms. I'm still on Windows XP 32-bit, and I also have the problem.

Yes and No. Not sure the referenced problem describes my issue. FF doesn't really "hang"-- it just takes its time getting where I want. Rest of reply was helpful.

Site Moderator

Re: Firefox 7 Unacceptably Slow. There seem to be many other users with this complaint, most mentioning Windows 7 platforms. I'm still on Windows XP 32-bit, and I also have the problem.

I have not tried to look into the workaround, but think it just restructures the places.sqlite file, other than the few minutes to download and install the appropriate software, and the few minutes to run that; there should afaik be no costs or side effects of trying the workaround. It may be worth giving the workaround a try to see what happens.

Are you noticing problems after bookmark changes, or syncing; along with high CPU usage ? (Those are the symptoms the workaround is aiming to help with.)

Developers did mention other things were under investigation. As always with trying to investigate problems on firefox a first stage is trying to reliably define and reproduce the problem.

New User

Re: Firefox 7 Unacceptably Slow. There seem to be many other users with this complaint, most mentioning Windows 7 platforms. I'm still on Windows XP 32-bit, and I also have the problem.

I'm not having hangs or freezes, it just takes an interminably long time for pages to load. I'm running vista(doesn't deserve a capital),& this has only been happening since updating to Firefox 7.

  I choose Firefox as much for what it isn't as for what it is,& up til now have been  happy with it,but its getting so that the everyday user who doesnt know a huge deal about computering,like me, has to put it in the too-hard basket. Will persevere but I hope a solution is sorted soon.

Re: Firefox 7 Unacceptably Slow. There seem to be many other users with this complaint, most mentioning Windows 7 platforms. I'm still on Windows XP 32-bit, and I also have the problem.

Sometimes when mozilla is overloaded with different tabs and many more it crashes and closed.After that it takes so much time to recover.Sometimes i have reinstall it again and this thing happen to new version also.And also some add ons are also not working with newer version too.

Site Moderator

Re: Firefox 7 Unacceptably Slow. There seem to be many other users with this complaint, most mentioning Windows 7 platforms. I'm still on Windows XP 32-bit, and I also have the problem.

You may often see this advice repeated. This a forum and each thread is intended for one particular problem, start your own thread by posting your own question. There are many potential problems causing firefox to be slow or crash, and many combinations of software used with firefox.

I suggest if you consider the problem to be very closely related to the one described in this thread instead of describing it in full in this thread make a brief comment and post a link to your own thread.

See also

New User

Re: Firefox 7 Unacceptably Slow. There seem to be many other users with this complaint, most mentioning Windows 7 platforms. I'm still on Windows XP 32-bit, and I also have the problem.

I had the same problem and found the solution here here

The solution involved going to about:config and changing "network.http.max-connections" line value from 256 to 48

Site Moderator

Re: Firefox 7 Unacceptably Slow. There seem to be many other users with this complaint, most mentioning Windows 7 platforms. I'm still on Windows XP 32-bit, and I also have the problem.

If you have a slow internet connection it may be worth considering reducing the value of network.http.max-connections as mentioned by jneighbors

I posted about that potential solution earlier Today and an unreviwed modification to the KB article has now been made <-- click on + revision content if you try that link ---

To include

Lower the max number of HTTP connections

On slow connections, too many HTTP connections may cause timeouts.

   In the Location bar, type about:config and press Enter.
       The about:config "This might void your warranty!" warning page may appear. Click I'll be careful, I promise!, to continue to the about:config page. 
   In the Filter box at the top, type network.http.max-connections.
   Double-click on the network.http.max-connections preference, the "Enter integer value" dialog box will open.
   In the field, type 30 which was the default value in old versions of Firefox and click OK.
New User

Re: Firefox 7 Unacceptably Slow. There seem to be many other users with this complaint, most mentioning Windows 7 platforms. I'm still on Windows XP 32-bit, and I also have the problem.

I followed jneighbors' advice and it seems to have done the trick. For completeness, I should add that I used John99's advice to restore the old default of 30 (vs. jneighbors' value of 48). Problem apparently solved-- thanks all.