the game, when loosing updates is extrapulating the last known movements of the planes around. so when the connection freezes for a few seconds, you'll see everybody else flying in their last known direction, and every body else will see you do the same.
when the updates resume, it looks as if there is some syncronization, and all planes warp to the right location.
the result:
if you shot anyone while in this no-update situation, he'll recive the hits only after the updates start working again. on his machine, by this time, your plane might be far a way and pointing in a different direction.
it happens to me too, being killed this way and killing strangly flying bandits that then warp and explode.
there are some connection issues latly (the TCP switch is regular now). don't take it too hard, and be VERY carefull before blaming anyone of cheating.
Bozon