Probably due to an Internet Explorer favicon bug, my Windows Live Hotmail favicon turned into a Gmail favicon. Previously it was an ESPN favicon.

(My Windows Live Hotmail icon somehow turned into Gmail.)
This is not the first time I see the wrong favicon. Back then, when using Internet Explorer 6 in Windows XP, I remember encountering something like it. I guess they haven’t really fixed that bug up.
Opera had the same problem before Kestrel