My Guess is with the following "Browser Helper Object":

O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)

Try to fix this object using Hijackthis tool.

Here is a related thread that discuss about the Object with same CLSID : 

http://real.lithium.com/real/board/message?board.id=realplayer&message.id=12850#M12850