Who says the taxpayer has to stump up? How about letting these banks go bust? Plenty more banks in the world who'd be only too happy to take the customer base (the solvent part) off their hands.
Do you think Ireland evern registers on most foreign banks radars? If it did, BOI and AIB would have been bought over years ago during the boom. Any foreign banks here are already looking for the exit as quickly as possible and do you really think a Country the size of Ireland should be dependent on foreign banks for their banking system?