One of my readers - Sammy - sent me an email just a few minutes ago that informed me of a problem that several Firefox 3 users were having when they were scrolling websites with large fixed background images.
The scrolling was choppy, example sites where this occurred can be found here, here and here. If you are one of the unfortunate with that issue you can fix it quite easily.
The solution was first posted by Alwyn on Deviant Art. All that needs to be done is to add a line of code to the Firefox userContent.css in the chrome folder. Check the official Mozilla website that explains how to find that folder in various operating systems.
Once located open the file in a text editor and paste the following lines at the end of it. If you do not have a file that is named userContent.css yet but one that is named userContent-example.css remove the -example part of the file first and add the lines afterward. Firefox 3 has to be closed for this.
/* Smooth Scrolling Workaround: Disable Fixed Background Images on Pages */
background-attachment: scroll !important;
There is a second solution that might help some: Uninstalling and installing Flash might help as well. Use the official Adobe uninstaller and installer to do that. Make sure Firefox is closed during the uninstallation and installation.
Update: Adobe has changed the download locations and made available a Flash Player Uninstaller for 32-bit and 64-bit versions of the Adobe Flash plugin. The 32-bit Flash Player uninstaller is available here, the 64-bit version of the program uninstaller is available here.
Close all web browser windows before you run the uninstaller. You may need to restart your PC after the uninstaller has removed the Flash Player plugin on the computer.
Update 2: Adobe has removed the uninstaller links. You now find the latest version of the uninstaller linked on the following page.
Update 3: Mozilla recently introduced changes to Firefox's scrolling engine. The issues experienced back then should no longer be experienced by users of the web browser.
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Ghacks is a technology news blog that was founded in 2005 by Martin Brinkmann. It has since then become one of the most popular tech news sites on the Internet with five authors and regular contributions from freelance writers.