Hi, In case you do social bookmarking check before opening this site. I have tried to open this bookmarking ( Theseotree.com/social/ ) site and got alert from firefox that this site is harmful. So I closed the browser and checked google for this site http://www.google.com/search?hl=en&q=Theseotree.com/social/&btnG=Google+Search&aq=f&oq= . Google too displayed the message 'This site may harm your computer' . I do not know if there is really a virus, but got warned by two trusted sources..google and firefox. so better be careful.