I'm not referring to pop-ups in Web Browsers, but more like bringing
windows to the forefront focus.

So you're in Windows Explorer and you copy a large mass of stuff to
somewhere else.

while it's putzing away (Windows is slow, it's always "calculating" and
stuff), I figure, may as well do some real work.

So I'm typing away and all of a sudden it pops up some dumb thing like
do I want to copy the read-only file. Of course, since I can type like
120 words/minute, by the time I realize it's popped up, I've hit many
keys a bunch of times.

Now Windows freaks out and various programs start opening/closing/etc.