apparently it appears to be a video card driver issue: https://bugzilla.mozilla.org/show_bug.cgi?id=490997
also reported here: (which includes links to a few other reports) http://bugs.freedesktop.org/show_bug.cgi?id=21523
apparently it appears to be a video card driver issue: /bugzilla. mozilla. org/show_ bug.cgi? id=490997
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also reported here: (which includes links to a few other reports) bugs.freedeskto p.org/show_ bug.cgi? id=21523
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