Undo, I'm referring specifically to the queue with the x-ray at the end. I've flown from Dublin airport at least once a week for the past 6 months (yes, I know, my carbon footprint doesn't bear thinking about), with most flights between 6 and 7 a.m. On rare occasions the security queue has been fine, under 5 minutes, but my general experience has been that the queue is about 25-30 minutes. It's improved slightly since the end of the peak summer travel period, but can vary from day to day. I generally fly to the UK with Aer Lingus, so bag-dropping etc is very quick, and I'm not counting that time at all.