** Changed in: firefox
       Status: Unknown => Confirmed

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https://bugs.launchpad.net/bugs/125970

Title:
  MASTER - slow scroll with image as background-repeat

Status in Mozilla Firefox:
  Confirmed
Status in firefox package in Ubuntu:
  Won't Fix
Status in firefox-3.0 package in Ubuntu:
  Invalid
Status in firefox-granparadiso package in Ubuntu:
  Invalid
Status in xorg package in Ubuntu:
  Invalid

Bug description:
  Binary package hint: firefox

  firefox 2.0.0.6+2-0ubuntu4

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

  I think that this .css is the cause of the problem
  body {        background-color: #fff;
  background-image: url("images/rubric/gradient.gif"); 
  background-attachment: fixed; 
  background-position: bottom; 
  background-repeat: repeat-x; }

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

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