For 2011, diversification is the key. so at least if something drops it is only a portion of your portfolio.
Keep the correlation low, so in other words if one security drops, something else goes up. e.g. hold shares in drinks companies, a basket of agri commodities ETF, shares in Oil companies, financial stocks (non-Ireland). It is extremely unlikely that all of these would move in the same direction at the same time.
You should spread the assets geographically as well. Avoid putting money into loss-making companies to get rich quick as it rarely pays off unless you are an insider. You should avoid exposure to Ireland, not justs because of the current state of Ireland, but also because you already have enough exposure to it in that you are living here, pension most likely overweight in Ireland etc.