[MX] Stage.height problem

so im writing a dynamic code to move a movieclip to a set position on the stage, but ive noticed that when i try to set the movieclip to 10 px above the bottom of the stage, the stage is 100 px cut off.

ex: sw = Stage.height;

the variable sw returns the value 300px when the stage value is 400px

is this some kind of bug or is this normal?
and if this isn't normal what can i do to fix it?

It's a minor bug in the flash environment.
Don't know if this is true for all installations.
It will be ok when you use the swf-file in html or exe.
When you test the application with CTRL+ENTER,
hit CTRL+ENTER once more - and all is as expected.

test it with your bandwidth profiler off and it should be ok... its a wierd bug

ok thanks

yw