we flew with them in 2006...from Leeds/Bradford to Amsterdam (KLM) and then on to MCO with Martinair.
The flight itself was okay.....they changed the flight times just before we flew which meant that we had a 6 hour wait at Amsterdam on the way back before our final leg to LBR..which was uncomfortable since we were already tired from the long flight from MCO...and we had 2 youngsters 2 and 5 with us.
On the way we were delayed flying out of Amsterdam (technical hitch)for 5 hours which wasn't too bad (looking back) - because we were excited.
I don't know if they have much control over that kind of event though....
They promised kiddie bags which did n't appear because 'they'd forgotten to load them'
BUT they were very reasonable and we would use them again if necessary...we booked late and couldn't get any reasonably priced flights anywhere (went Easter..very busy)