If it happened to a lot of people on the Rome flight (Jacqui's post) then I would have queried whether the scales at Rome were dodgy (or not)
I've had a couple of flights with Ryannair recently and would agree with the comments made by Marina. Flights were on time, cheap, cabin crew cheerful and would definitely fly with them again. No frills, no hassle, and they certainly didn't bang on constantly about lottery tickets, meals etc. etc. like Thomas Cook. Oh, and by the way, only 10p of the Tom Cook lottery is given to the charity so they pocket the rest:-\