Comment 101 for bug 125970

Binary package hint: firefox

firefox 2.0.0.4+2-0ubuntu3

I've found that scrolling is slow in all sites (comparing to windows), but really slower in sites where there is a static image that does not move when I scroll
this is a css example

body { background-color: #fff;
background-image: url("images/rubric/gradient.gif");
background-attachment: fixed;
background-position: bottom;
background-repeat: repeat-x; }

site example:
www.starcraft2.com
http://railsdojo.wordpress.com/

this problem is empathized when using compiz.
The problem is present with both radeon and nvidia video cards, even when compiz is disabled

This problem is less invasive if using firefox downloaded from mozilla.com (without ubuntu patches) or swiftfox, but it is still present
Scrolling in windows XP is really faster (when I say really I mean at least 10x in the starcraft site, which is the site that has most slowdown problems), even in sites that does not have a background image

Other tests
konqueror 3.5.7-1ubuntu10: much more reactive in http://railsdojo.wordpress.com/ and normal sites, but slower in www.starcraft2.com
epiphany 2.19.5-0ubuntu1: same slowdown as firefox