I think the issue all goes back to the Euro. If European countries had monetary sovereignty, debt wouldn't in and of itself be an issue. They'd only have to worry about debt in regards to other related factors like inflation.
It seems Spain isn't playing ball with austerity, and if they decide to break with the Euro, I see a number of other southern Eurozone countries following. It'll initially lead to very hard times, but in the long run the entire region will recover and be much more stable for it.
It's really scary how fast and how far things have fallen in Europe. In 2007 Spain posted a budget surplus, had an 8.2% unemployment rate, and was seen as a paragon of fiscal responsibility.
Now they're on the verge of collapse and unemployment has eclipsed 22.85%, and I think it's because dipping into debt can be disastrous for a country that cannot print its own money. Stimulus spending is essentially not an option.
The happenings in Portugal demonstrate why austerity has at best been ineffective (Ireland), and at worst made things considerably worse for the target nation. In Portugal, austerity cuts lead to decreased economic activity, GDP, and tax revenue and increased unemployment, thus increasing its debt to GDP ratio:
http://www.nytimes.com/2012/02/15/business/global/portugals-debt-efforts-may-be-a-warning-for-greece.html?_r=1&pagewanted=all










