For almost 10 months, I have been trying to reach my landlord who has disappeared -- I suspect foreclosure, as I live in a condo. My rent check stopped being cashed in June 2012, but I have continued to set aside the rent money. Month after month I tried the only email address I had for the landlord. I never had the name of an individual and my lease was with a, now defunct, management company. None of the contact information I have is working. I have been unable to locate the unit owner and the condo association has been no help. My lease expired in May 2012 and I had intended on renewing the lease for another year. What are the repercussions if I walk away from the unit?