When I have my web browser open for some moderate time period, suddenly the "web-page tabs" become scrambled and have an overwriting text which appears to be Mandarin or Japanese. The red "close (x)" button on the tab as well as the plus (+) to open a new window page all come scrambled and out of alignment and/or hidden. If I close out my browser and clear all my internet data and reopen, things start normal again. But these symptoms are ALWAYS returning. It does not matter what webpage I am on. Even Google's search engine get's this "tab-scramble." ANY HELP? Is this a virus, worm, bug? I have Norton anitvirus and MacAfee Internet security, but they don't detect anything. And again, this occurs on any harmless site. I can email screenshots of these occurrences if it helps. Thanks for any suggestions!!