Yeah that happened for the first time today, I was browsing the home screen and the call came in at the top minimised. I think you can move it around as well although I didn't try.
I think by default though if the phone is locked it's still full screen.
oooh, keep talking!!
i hope you can move it around, but even if it's married to the top, it'll still be so so much better than when it takes over the entire display!
it makes sense with the locked screen. i mean you're not losing anything, and it can take advantage of those nice full screen pics, that sometimes work.