Have N word in product page

Hello,please help me,my site si kertascafe.com,i have no made any modification on product.tpl but when open in product page the N word will show at the top left of that page and also show up at review area.please look up the image below and for more detail please visit my store kertascafe.com and click any product.





I also check up on header.tpl but its nothing in there..where this thing hiding?..

if you have vqmods enabled, check those acting on productpage.