Chinese writing appears at the top of my Firefox browser after I've been on Firefox for a while, have opened a few pages, soon thereafter Firefox stops loading sites, so, I restart Firefox, it works at first, but then the Chinese writing starts all over again. My friend says it is a virus, so I close my browser and am using Explorer not instead, though I love Firefox and am a big fan. I run my McAfee virus scan and it doesn't come up with anything on any of the pages. The Chinese writing runs all the way across the top of the Firefox browser top bar.