hm, thanks for the effort, but the problem is still here...
i've been trying different behavior combinations, jump-thru, solid, even using a custom movement vertical speed instead of physics to drop the platform, but it seems like it's about the way platform behavior works, being "attached" to the floor <img src="smileys/smiley5.gif" border="0" align="middle" />
Somehow, the player keeps attached even when i deactivate the solid/jump-thru behavior
EDIT: actually, i've found a solution...
after the 1 second, when platform becomes not solid, check if player is colliding at an offset with it. if true, add some negative vectorY to te player. this way it "detaches" from the platform when it falls, but still, would be awesome if it happened automaticaly <img src="smileys/smiley17.gif" border="0" align="middle" />