I think when the DAA look back at their actions over the recent 2 cold spells and keeping the runways open etc at Dublin they did okay but maybe need to look at some more efficient machinery in dealing with the clearing of the snow/ice and having less downtime if it can be done to the same standards.This will involve investment of course and one I'm sure the regulator would rule on.As for Ryanair's cry about the time the airport was closed they do tend to forget how many flights they cancel themselves due to circumstances outside their control when it suits them and I'm talking about the flights with low load factors that get pulled.