Firefox 4.0b7 - test pilot

Is there any way to ground this pilot before takeoff? Or even to bring it to
earth without crashing Firefox? I’ve tried “more info” and the “X” button
but both end with a pile of wreckage.

I’m attempting these test flights on runway KDE 4.5.3 at airfield openSUSE
11.4m2. Chocks away!

Graham Davis, Bracknell
It was raining cats and dogs and I fell in a poodle. [Chic