I can't reproduce this with the directions in comment #21.
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.3a1pre) Gecko/20091112 Minefield/3.7a1pre
It's possible it only affects 1.9.1 or x86_64 machines using i686 builds or something... I'll try testing 1.9.1 later tonight.
I can't reproduce this with the directions in comment #21.
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.3a1pre) Gecko/20091112 Minefield/3.7a1pre
It's possible it only affects 1.9.1 or x86_64 machines using i686 builds or something... I'll try testing 1.9.1 later tonight.