I'd be very interested to get more information on layovers and turnarounds too, like Timea..
I was reading through some of the old EY posts a while ago, trying to find more info on this (was unsuccessful)...
Are there some sort of 'general rules' about layovers, or particular patterns anyone has noticed.. i.e. if flights over 8 hours long will have at least a 24 hour layover etc etc?