I am attempting to wrap-up development cycle and have arrived at the point
where "small annoyances" can no longer be avoided<g>. I notice that other
applications windows (i.e. from other apps) "bleeding through" the UI from
time to time.

Now the "strange" thing is that the "underneath app" that always "bleeds
through" is Internet Explorer. I am at a loss as to how to proceed since I
have done nothing "knowingly" to enable any sort of transparency, all
TransparencyKey values have been left to their default values.

Carlos