I am running Windows Live Mail 2012 and have run into a recent problem.  Seems the program took one contact from my address book and started duplicating it over and over again.  I normally have about 300 contacts.  All of a sudden I had over 30,000 contacts, all duplicates except for the original 300.  Needless to say, this huge amount of contacts brought the WLM performance to its knees.   I deleted all the duplicates, keeping that one name in there, and repaired WLM via the control panel program option.  It returned with a vengence.  I then deleted all the duplicates contacts and also eliminated the initial contact from which I assumed it spread.  Then, I "repaired" WLM again.  Its still finding that one totally deleted contact and replicating it every day.  I've learned to anticipate this and just about every day I delete several hundred of these at a time.  Anyone have a fix for this?