430144 - large background image causes slow scrolling and high CPU use

Status: RESOLVED DUPLICATE of bug 124150

(Firefox :: General, defect)

Description

[JT]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b5) Gecko/2008032619 Firefox/3.0b5
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b5) Gecko/2008032619 Firefox/3.0b5

When I go to this website the page scrolling is very slow & appears to freeze Firefox.  There is very high CPU usage during scrolling.

Reproducible: Always

Steps to Reproduce:
1. Go to http://www.macromedia.com/software/flash/about/
2. Notice How slow it scrolls and the CPU usage
3.

Comment 1

[JT]

http://www.rossde.com/ also demonstrates this bug

Comment 2

[JT]

http://www.fourtheye.net/?p=1019 is another site with this problem

Comment 3

[JT]

Attachment: Test Case (MySpace Page)

This page loads very slowly, and in error console I get the error "Unknown property 'word wrap'. Declaration dropped" many times.

Comment 4

[Buckethead]

I don't have any problems with Kubuntu Hardy and nv drivers. I suspect you may have a video card problem. What drivers are you using?

Comment 5

[JT]

I think you are right, I upgraded to Ubuntu Hardy with a ATI Mobility Radeon X1400 256MB and I am no longer having any problems with slow loading on most of the pages, however http://www.fourtheye.net/?p=1019 still is scrolling slowly, tell me if this site works for you.

Comment 6

[JT]

http://www.tuaw.com/  I am also having trouble with this site

Comment 7

[Buckethead]

Both work fine for me. I'm not sure what to try now.

Comment 8

[mmortal03]

This is probably Bug 124150