Weird unload level problem....

Hi
I have load outside swf with loadMovieNum("outMc", 5); in _level5. and _level6.
In the _level5 swf i have this script

code:

---

loadMovieNum("outMc5", 6);

---

that loads the outside swf in _level6.
So in total i have 3 swf in my movie.. the main movie the swf loaded in lv5 and the swf loaded in lv6.

In _level5 i have a button "home" with this script

code:

---

 

on (release) {

_level0.gotoAndPlay(250);	

}

---

on _level0 frame 250 i have this script

code:

---

unloadMovieNum(5);

unloadMovieNum(6);

---

All work perfect, BUT if i press the button "home" when _level6 mc is preloading, the root just play on AND on ,ignoring all the actions and stop actions.
If i press the button "home" after the _level6 mc preloader is done all work perfect.
Working on this problem over an week now,trying all i could think of ,but cant make it work.
If u have any ideea pls help me couse my stupid brain cant fiind any good solutions.

Thank You

here is the problem description again, this time with an example.

i have this action on stage at frame 60

code:

---

loadMovieNum("web.swf", 6);

stop();

---

this action on a button

code:

---

on (release) {

	unloadMovieNum(6);

}

---

if u try to press the button while the movie is preloading the _root for some reason starts to play.

here is the example: link
try to hit the button when mc is preloading
after mc finished preloading the action from button works ok

here are the flas :FLA

Please take a look and tell me what do u think ,cause' i have no idea why this is happening

thank you.