I have just run Avast for Mac and the program returned the following file as suspect:OpenTK.dll . The file is located in /Music/iTunes/iTunes Media/Mobile Applications/Rdio 3.0.3.ipa/Payload/Rdio.app/OpenTk.dll. I do not know if this is really an infection or not, but when I did a search it seems that this file is needed to run some programs. I do not know if it has anything to do with Google verification (two step verification), but when I tried to log into Google I did not receive the verification number. After a "restore" of the file, I did get the verification code. Any help?