I am almost in the same scenario myself; Though I am yet to hear from 5 schools (hope is a dangerous thing), I am 0/6 in 2008 and 0/9 in 2009 till now. Don't know what I am gonna do this year. The best option that comes to my mind is enrolling in graduate classes like Real Analysis, Topology, or Complex Analysis in a good neighboring university, and proving that you can at least handle the course load. Adding good grades in higher level classes to your transcript should certainly help the cause next time around.