[ubuntu] Ubuntu 12.04 Menu Bar Bug

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http://ubuntuforums.org – I'm really not certain how to refer to this question or really what to call it, so forgive me if it is already answered and i was unable to locate it. I've been using ubuntu for the past few months and its been running smoothly, but recently this bizarre problem has occurred. in the first screenshot is the menu when it looks normal, but now in the mail, user session, and sound menus the color has changed to white. its a small thing, but its irritating. this started right after i was trying to install google earth through a plethora of methods in terminal and synaptic. i gave up on that, (Hardware)