User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5; rv:2.0b2) Gecko/20100720 Firefox/4.0b2 Build Identifier: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5; rv:2.0b2) Gecko/20100720 Firefox/4.0b2 Black stripes flash at the bottom half of the browser area just after loading google homepage during the fading effect that happens while loading the top sign-in ribbon. Other browsers and firefox 3.6.8 work fine Reproducible: Always Steps to Reproduce: 1.load www.google.com 2. 3. Actual Results: Black stripes flash just after loading google homepage during the fadind effect that happens while loading the top sign-in ribbon Expected Results: transition should be smooth Screenshot: <a href="http://tinypic.com?ref=3447e2t" target="_blank"><img src="http://i30.tinypic.com/3447e2t.png" border="0" alt="Image and video hosting by TinyPic"></a> [IMG]http://i30.tinypic.com/3447e2t.png[/IMG]