It seems to me virus or some advertising company. I have seen this on my friends computer who got some pharmacy ad showing on bottom of page. It was only on one pc. it only went away when i reinstalled the windows.
weird, my country is canada This only happens in the opera browse and no other. I fixed it by restarting opera
That's strange, can you tell us which country specific this is? Google (Worldwide) & Google Australia, seems just fine.
my guess,opera cached this image http://www.google.ca/images/nav_logo3.png in the wrong place. that image is the one you see after you search. it is stretched because of the dimensions.