When I send an email, a window opens with the following msg: l.yimg.com says: undefined. At the same time the normal email sent box appears but I must first close the l.yimg box to click done. While the l.yimg box is open a large ad from a mortgage company appears in the space that would normally be the body of an email. I have not opened any ads from this company. When I click on OK in the l.yimg box it opens another box that says "click to prevent this page from creating other dialogues." When I click that the ad image disappears as well as the boxes. Does anybody know what this is all about? It is so annoying & I'm wondering if it's some sort of virus, malware, whatever. Thanks!