Such a "pun" with the letters is on the AMD, which suggests a more global problems. Here is an example screenshot (though the letters in the Cyrillic alphabet, but I think the crash lines visible).
** Attachment added: "Снимок экрана от 2014-03-30 22:30:21.png" https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1299915/+attachment/4055011/+files/%D0%A1%D0%BD%D0%B8%D0%BC%D0%BE%D0%BA%20%D1%8D%D0%BA%D1%80%D0%B0%D0%BD%D0%B0%20%D0%BE%D1%82%202014-03-30%2022%3A30%3A21.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1299915 Title: Symbols are occasionally distorted in different programs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1299915/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs