[Bug 239325] [NEW] Javascript makes Browser unusable

meist3r markus.napp at gmail.com
Wed Jun 11 23:03:48 UTC 2008

Public bug reported:

Binary package hint: firefox-3.0

When accessing certain sites the browser becomes unusable during
Javascript calls.

Let me explain this with a practical example:
On this page http://www.gametrailers.com/player/34277.html there are several elements that are loaded with Javascript automatically. The comments list specifically needs user interaction to load more comments. This particular site has 1700 comments which should be displayed in one enormous column after clicking on the "Show all comments" field. 

When I click the field to load all comments the FF window becomes
unusable. It locks up completely. Even though it's a lot of comments
data wise that is not really exciting since they are usually not more
than 2 lines long. Sometimes waiting solves the problem but it can take
several minutes until the window becomes usable again. When I switch to
another workspace and back nothing of the FF window is rendered except
for a few artifacts. All operations concerning FF come to a screeching
halt when this happens, downloads won't continue and all I can do is to
Force Quit the browser and re-open it again.

I don't know for certain if this is bad programming on the website's
Javascript side or with the rendering in Firefox. I can't really compare
this to earlier version because the largest comments section so far had
about 600-700 comments and I never had any problems with that neither
with FF3B5 nor all pre-3 versions.

I use FF 3 RC1 on Ubuntu Hardy with the proprietary ATi fglrx driver
which I have extracted into .deb packages for my distro.

ProblemType: Bug
Architecture: i386
Date: Thu Jun 12 00:49:20 2008
DistroRelease: Ubuntu 8.04
NonfreeKernelModules: fglrx
Package: firefox-3.0 3.0~rc1+nobinonly-0ubuntu0.8.04.1
PackageArchitecture: i386
SourcePackage: firefox-3.0
Uname: Linux 2.6.24-18-generic i686

** Affects: firefox-3.0 (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: apport-bug

Javascript makes Browser unusable
You received this bug notification because you are a member of Mozilla
Bugs, which is subscribed to firefox-3.0 in ubuntu.

More information about the Ubuntu-mozillateam-bugs mailing list