Originally Posted by UAL_Rulez
Any restriction on use of laptops while the aircraft is parked, taxiing etc. have little or nothing to do with electronic emissions issues and everything to do with the requirement that all luggage be "properly stowed." Anything as large and heavy as a laptop has to be in an approved storage location during ground movement and takeoff and landing.
This makes sense -- but does not apply when parked with the engines shut down, which is probably the case during an extended wait for deicing.