[gnome] Distorted text in programs' captions and icons' titles!

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http://ubuntuforums.org – I currently use GNOME 3 (gnome shell). The issue came up during the upgrade to the new Ubuntu 12.04, and it is still there. I'll try to explain what happens. Each time the "frames" that form the video stream are refreshed, some part of text become "distorted". Not all the text, just the programs' captions (i.e. Google Chrome's bookmarks and tabs' titles) while the webpages' text is perfect. The distorted text becomes normal when I hover the mouse on it. It is a very annoying issue: if I switch the navigation tab on Chrome, then almost all bookmark captions become dis (Hardware)