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When I left-click the "Bookmarks" button in the Menu bar the computer is very slow to respond. When I use Ctrl+B there is a quick response.

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When I left-click the "Bookmarks" button in the Menu bar the computer is very slow to respond. When I use Ctrl+B there is a quick response.

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.5 r502
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealPlayer Download Plugin
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.5
  • RealNetworks(tm) RealDownloader Chrome Background Extension Plug-In
  • RealNetworks(tm) RealDownloader PepperFlashVideoShim Plug-In
  • RealNetworks(tm) RealDownloader HTML5VideoShim Plug-In
  • RealDownloader Plugin
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Next Generation Java Plug-in 10.9.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • iTunes Detector Plug-in
  • Google Update
  • Foxit Reader Plug-In For Firefox and Netscape
  • Windows Activation Technologies Plugin for Mozilla
  • GEPlugin
  • 5.1.10411.0
  • Express View Browser Plugin
  • NPWLPG
  • np-mswmp

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0

More Information

cor-el
  • Top 10 Contributor
  • Moderator
10783 solutions 97062 answers

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe mode start window or otherwise make changes.

Try to disable hardware acceleration in Firefox.