So, despite having no real economic background and a complete ignorance of all the complexities of their situation, I'm going to give the Republic of Ireland some advice about how to get of their current difficulties.
First, leave the euro and readopt the Irish Pound. Quite frankly, being in the euro is doing you no favours and, as it's the Central Bank that control interest rates and the like, leaving the euro would give you a lot more tools to deal with your problems. Leaving would be problematic for a while but at least the Irish Pound would settle at a value representative of their economic strength and would be weak enough to allow them to start exporting competitively.
Second, default on your debts. Sure, the banks may collapse but if your government sets up an internal state owned bank to continue lending internally then you won't suffer many serious internal effects and at least you won't be paying huge amounts of interest to foreign banks and bondholders any more.
Third, take a very state directed view of your economy for the time being. People homeless on the verge of being evicted from their homes? Cancel all mortgages and other debts, you own the home you live in. You've got thousands of empty homes so move the homeless people into them and if there aren't enough then start a state run house building program to build more - it would at least provide some meaningful employment for those without jobs.
Fourth, the basic human needs nowadays are shelter, food, water and energy. We've already dealt with the shelter problem so ensure that a) no food is exported until internal demand has been met b) that the water supplies are nationalised so that everyone has access to it and c) that the energy industries are nationalised so that you can keep the lights on. Put simply, Ireland is self-sufficient in basic necessities. there's no need for people to go cold or hungry as long as the state intervenes to make it so.
Now, this is in effect heavy socialism. I, like a lot of people take the view that state socialism can be a bad thing in the long run, but in the short term it's exactly what Ireland needs. The crisis facing them is comparable to that of Britain in the First and Second World Wars and what did the government do in those situations? It assumed control of key industries and resources for the duration of the crisis. Ireland should do the same.
Once your internal economy is working again, when you've reduced unemployment figures through mass national work programmes (such as infrastructure building) and people no longer need fear losing their homes or being bankrupted by the banks, you can start privatising things again and loosening state control. Only this time make sure there are regulations in place to prevent this kind of crisis from ever happening again.