It also happens to me, latest version of firefox and firebug. Firebug works fine with the global menu bar integration add on disabled, but when you enable it, it will crash firefox. You then need to restart firefox in safe mode and disable all add ons to make it work again.
It also happens to me, latest version of firefox and firebug. Firebug works fine with the global menu bar integration add on disabled, but when you enable it, it will crash firefox. You then need to restart firefox in safe mode and disable all add ons to make it work again.