[ubuntu] Browser not going full screen

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http://ubuntuforums.org – Hi there... as you can see in the attachment, my browser doesn't go full screen. If you look at the bottom there's a small portion that won't go all the way down. And yes, this screen is fully maximized. This problem doesn't exist with Chromium. Any solutions would be most appreciated. Attached Images Screenshot from 2012-07-27 17:06:04.jpg (89.7 KB) (Hardware)