1. Mismanagement that is clearly deliberate and malicious.
2. Innocently incompetent mismanagement that has such detrimental consequences that it could not be worse if it were deliberate and malicious.
3. (proper) A specific administration that meets either of the above definitions.
We still have two and a half more years of the Obama Maladministration ahead of us, but fortunately I can see 2012 from my house.