It used to waste hours of my time waiting for every small change to rattle over to the server and back and it could never optimise - and it was also visible to everybody during the creation phase. Thye had no idea which plans were definite and which were still under construction. It was merely electric paper and I loathed it with a vengeance.
Flight Log suffers from server lag as well, that's not my main gripe with it. The interface is ghastly and counter-intuitive. It takes ages, because of the poor interface, to change things; and logging the trip when you walk back in is truly frustrating. More to the point, no one seems to be monitoring the contract, no one's in charge except for the local OICs ...
BOW