442643 - Firefox makes the system freeze several seconds with some sites

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[rom]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; fr-FR; rv:1.9) Gecko/2008061015 Firefox/3.0
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; fr-FR; rv:1.9) Gecko/2008061015 Firefox/3.0

In ubuntu hardy + firefox 3, go to this website : http://www.ultimagames.fr
It takes about 10 seconds to open (on a 2x2.2Ghz with 2Go ram), then each scroll step takes about 5 seconds.

I tried on a very old computer (512M ram, DELL D600) with Windows XP + firefox 3, it takes about 1 or 2 seconds only to load, even if scroll are quite slow (but faster than on ubuntu).

Is there a problem with the linux version of firefox?

It makes the navigation on some websites totally impossible.

Reproducible: Always

Steps to Reproduce:
1. Go to http://www.ultimagames.fr with ubuntu-hardy+ff3
2. Wait
3. Wait again ... :)
Actual Results:  
big lag

Expected Results:  
normal nagigation

Comment 1

[David LONY]

I have the same problem...

Comment 2

[Ria Klaassen (not reading all bugmail)]

In most cases the extension Interclue might help, because it displays on hover the contents of the page as a tooltip/popup in a simple format.
https://addons.mozilla.org/en-US/firefox/addon/4999
But it is indeed a nasty problem for owners of less fast computers.

Comment 3

[Denis Eperonnier]

I also have the same problem using latest Ubuntu Hardy 8.04.1
Mozilla/5.0 (X11; U; Linux i686; fr; rv:1.9.0.1) Gecko/2008072820 Firefox/3.0.1
Computer: P4 2.4GHz, 1Go RAM

When I switch to WinXP (dual boot), FF3 is much faster.
Note that I use exactly the same profile folder on both systems, but this problem was also present before.

Comment 4

[Tyler Downer [He/Him]]

This is a mass search for bugs which are in the Firefox General component, are
UNCO, have not been changed for 500 days and have an unspecified version. 

Reporter, can you please update to Firefox 3.6.10 or later, create a fresh profile, http://support.mozilla.com/en-US/kb/managing+profiles, and test again. If you still see the issue, please update this bug. If the issue is gone, please set the status to RESOLVED > WORKSFORME.

Comment 5

[Tyler Downer [He/Him]]

No reply from reporter, INCOMPLETE. Please retest with Firefox 3.6.12 or later and a new profile (http://support.mozilla.com/kb/Managing+profiles). If you continue to see this issue with the newest firefox and a new profile, then please comment on this bug.