Bug#392255: Seems to be a firefox problem

[David Härdeman <david@hardeman.nu>]

After looking at the corresponding beryl bug [1], it seems that this is 
in fact a Firefox bug [2] [3].

[1] http://bugs.beryl-project.org/ticket/9
[2] https://bugzilla.mozilla.org/show_bug.cgi?id=368029
[3] https://bugzilla.mozilla.org/show_bug.cgi?id=215762

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David Härdeman