EI-A330, you can dilute the €100m in semi-state nonsense or massage the figures any other way you want, but it doesn't change the reality that if Shannon hadn't run up these enormous debts, the Government would be €100m better off right now than it is, and we can ill-afford that kind of wastage at the moment. This IS costing the tax payer, no question about it.
Ryanair's existing UK and sun routes from Knock wouldn't still be running if they weren't doing the business for them, they are not a charity. The fares you quote are for some of the 2012 start up routes which will take time to bed in and may or may not be ultimately successful.
Also, limited winter opening hours is the kind of sensible business decision that results in massive debts not being run up. It might be something Shannon should consider if they want to avoid going back to the government 'cap in hand' in five years time looking for another tax payer bailout.