Annoying glitch when using effects

[Pipan]

Im using these effects to switch between modules:

<mx:Sequence id="moveOut">
<mx:Move duration="500" xTo="{1920}" effectEnd="reallyLoadModule()" />
<mx:Fade alphaTo="0"/>
</mx:Sequence>


<mx:Sequence id="moveIn">
<mx:Move duration="500" xFrom="{-1000}" xTo="0" />
<mx:Fade alphaTo="1"/>
</mx:Sequence>


My problem is that BEFORE flex starts to fade/move in the new module, its for a few milliseconds visible in its final position with full opacity.

This looks horrible and I need to solve it somehow. Is it a bug?

[Pipan]

Solved, using Parallell instead of Sequence

But, it's only becuase of the alpha-effects it seems nice.
Without Alpha-effects the problem is there.