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Since updating to Firebug 1.9, the interface has suddenly changed to Dutch. I'm mystified as to how that's happened, because my machine is entirely configured in English.

How can I switch it back to my default locale?

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up vote 3 down vote accepted

This blog post provided a simple solution:

  1. In the address bar type about:config.
  2. Find the parameter named extensions.firebug.useDefaultLocale.
  3. Double-click on it and change its value from false to true.
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