If you have used Firefox the Firefox 3.6 beta, you have probably noticed that Mozilla has introduced support for Windows 7 ^[1] taskbar thumbnails. Firefox 3.6 allows you to directly select a tab from the taskbar. This is similar to how Internet Explorer 8 behaves in Windows 7 ^[1]. Some people love this behaviour while others find it annoying. I happen to belong to the latter group. I am a heavy multi-tasker and often have dozens of open tabs organised into multiple windows. Taskbar tab previews doesn’t make any distinction between tabs from different windows and is a major productivity bump.

If you find taskbar tab previews irritating, here is a quick way to get rid of them.

• Type about:config in the awesome bar (address bar). Ignore the caution message and proceed.
• Type browser.taskbar.previews.enable in the filter bar.



• Now, you will be displayed a single entry whose current value is True. Double click on the entry to change its value to False.

That’s it. Firefox should instantly stop displaying tab previews in the taskbar.

via Tweaking With Vishal ^[2]