Comment 101 for bug 217580

I can confirm this,
 the difference is like night and day!

Sounds like this might be the culprit.

Did you find that gmail uses this kind of element? This might point directly
to a firefox bug?

Thanks, great work!

2009/5/2 aatdark <email address hidden>

> this is an updated version of the page. It does not contain any
> "position:fixed" element on it.
> as you can see the scrolling is very fast.
>
> http://stinkt.kicks-
> ass.org/1b6cc1af2e8437646c9b7422d78e6eb3/no_css_fix_pos.html
>
> (original page with the position:fixed elements)
>
> http://stinkt.kicks-ass.org/1b6cc1af2e8437646c9b7422d78e6eb3/slidecast%20-%20studio%20-%20vertical-view.html
>
> --
> Slow performance with Gmail
> https://bugs.launchpad.net/bugs/217580
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in The Mozilla Firefox Browser: Unknown
> Status in XUL + XPCOM application runner: Confirmed
> Status in “firefox-3.0” source package in Ubuntu: Invalid
> Status in “xulrunner-1.9” source package in Ubuntu: Fix Committed
>
> Bug description:
> Binary package hint: firefox-3.0
>
> When scrolling in Gmail (and other websites however its not as noticable)
> the scrolling performance is terrible. There is a slight lag from when it
> starts to scroll to when it actually does scroll. On my Windows XP machine
> it is MUCH faster (basically instant). This is present with both Compiz
> enabled and disabled.
>
> ProblemType: Bug
> Architecture: i386
> Date: Tue Apr 15 01:01:46 2008
> DistroRelease: Ubuntu 8.04
> NonfreeKernelModules: nvidia
> Package: firefox-3.0 3.0~b5+nobinonly-0ubuntu1
> PackageArchitecture: i386
> ProcEnviron:
>
> PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
> LANG=en_US.UTF-8
> SHELL=/bin/bash
> SourcePackage: firefox-3.0
> Uname: Linux 2.6.24-16-generic i686
>