Getting a threat from ytimg.biz - Mtool_new.exe Anyone have this??

I am posting here looking for help/support.

 

For the past day I am recieving a messge from Norton saying a threat has been removed Mtool_new.exe.  The file started from ytimg.biz.  It keeps displaying the message over and over again.

 

Anyone else have this message coming up?  Its saying its a ws.reputation.1 threat.  Am I infected?  How can I remove this and stop it from happening every min.

 

Thanks for any help