application opens only after 2 tries

Hello all ,

I have a weird situation when only on the second click my app starts .
on the first it blinks fast and won't open .
my app contains the ProcessCommandParametersL() which checks if the app was recently on , but it also happens when the device is on and not restarted .

I am using the E66 .

New Info :

My iAutoStart is not initialized on the constructor or on ConstructL() .
My ProcessCommandParametersL() Looks like this :

iEikonEnv->RootWin().SetOrdinalPosition(-1);

if (aCommandLine.OpaqueData().Length() > 0)
{
iAutoStart = EFalse;
}
else
{
iAutoStart = ETrue;

}
return CEikAppUi::ProcessCommandParametersL(aCommandLine);