pieces won't move

in a bullet game, the last couple of days i have noticed that the pieces, not always, but often, won't move if i am moving them very fast. and i will have to move it AGAIN, and sometimes even a third time. does this happen to anyone else? and is there anything i can do to fix it?

i think i have figured out what it is. it is not my internet connection. it happens only when i am in the act of moving a piece, and my opponent moves, then the flash app forgets that i have a piece selected (and am in the process of moving it) and when i drop it where i want to move it, it goes back to it's start square.

when i make my move fast enough to achieve a pre-move, it works fine. it's that in-between time that it breaks, and is frustrating.