View notes for:

Firefox Notes (First offered to release channel users on March 13, 2012)

Check out what’s new and known issues for this version of Firefox below. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla.

If interested, please see the complete list of changes in this release.

What’s New

  • NEW
    Firefox can now migrate your bookmarks, history, and cookies from Google Chrome
  • NEW
    With Sync enabled, add-ons can now be synchronized across your computers
  • NEW
    The CSS text-size-adjust property is now supported
  • CHANGED
    Redesigned media controls for HTML5 video
  • HTML5
    The outerHTML property is now supported on HTML elements
  • HTML5
    View source syntax highlighting now uses the HTML5 parser (see bug 482921)
  • DEVELOPER
    The Style Editor for CSS editing is now available to web developers
  • DEVELOPER
    Web developers can now visualize a web page in 3D using the Page Inspector 3D View
  • DEVELOPER
    SPDY protocol support for faster page loads is now testable
  • DEVELOPER
    XMLHttpRequest now supports HTML parsing
  • DEVELOPER
    Files can now be stored in IndexedDB (see bug 661877)
  • DEVELOPER
    Websockets has now been unprefixed
  • FIXED
    Various security fixes
  • FIXED
    Firefox notifications may not work properly with Growl 1.3 or later (691662)

Known Issues

  • Unresolved
    If you try to start Firefox using a locked profile, it will crash (see 573369)
  • Unresolved
    For some users, scrolling in the main GMail window will be slower than usual (see 579260)
  • Unresolved
    Some synaptic touch pads are unable to vertical scroll (see 622410)
  • Unresolved
    OS X: WebGL performance may be degraded on some hardware (see 713305)
    Unresolved on v11 Resolved in v12
  • Unresolved
    Windows: The use of Microsoft's System Restore functionality shortly after updating Firefox may prevent future updates (see 730285)