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How can I stop the ripple across the screen when scrolling down since I upgraded my Mac to Firefox 4 ?


Since I upgraded to Firefox 4 I am getting a horizontal ripple across the data when scrolling down, which is very disruptive and uncomfortable. How can this be corrected. I am using an IMac with Mac OS X 10.6.7 ?

Chosen solution

Way more than 2 people have this problem. No response yet. Not good. Opera here I come.

Read this answer in context 2

Additional System Details

This happened

Every time Firefox opened

This started when...

after I upgraded to Firefox 4

Installed Plug-ins

  • iPhoto6
  • Microsoft Office for Mac SharePoint Browser Plug-in
  • Shockwave Flash 10.1 r102
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in web pages. For more information, visit the QuickTime Web site.
  • Java Plug-In 2 for NPAPI Browsers


  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0) Gecko/20100101 Firefox/4.0

More Information

albertg 1 solutions 2 answers

Chosen Solution

Way more than 2 people have this problem. No response yet. Not good. Opera here I come.

baloudog 0 solutions 5 answers

Same problem on Imac with updated software. Had problem in earlier versions and changed key : <key>CGDisableCoalescedUpdates</key> <true/> to false and that resolved the problem. It helps somewhat with Firefox 4, but not enough. Is this just a Mac problem or are PCs having the same problem? This may be enough for me to switch browsers or go back to 3.6.

teszeract 0 solutions 2 answers

Can you point me to the thread where others have mentioned this issue. I want to follow the progress. Thanks.