haha, and here i thought i was the only one
i agree with 'Frenchie', that was my theory too, that the water is just washing it down after you've washed your hair (because all that lovely scrubbing can losen some hairs...) so I've found that doing one last check before my shower's over gets rid of 'em all and then i'm good to go!
hope you find something that works for you, lol