An excellent interview with Daniel Stelter on the problem of debt overhang:
http://janelanaweb.com/trends/we-all-are-in-a-ponzi-world-right-now-hoping-to-be-bailed-out-by-the-next-person-interview-with-daniel-stelter/
Worth a read.
One point I disagree with is the idea that debt mutualisation across EU states will solve the problem. It will not: the quantum of debt will not be reduced by mutualisation. We need a QE-like targeted debt deleveraging facilitated by the ECB. Not a 'warehouse for debt' but a debt furnace.