3GS display question

I'm at work right now (on my 15), so I can't compare mine to the ones at the Apple Retail Store, but, when my 3GS is on hold/sleep, I can still see the border of the springboard on the screen.

Is it supposed to be there? This is the first time I've noticed it and I can't recall if it was ever just a black screen or if the border was always there.

Do you mind checking yours and telling me if you get it too?

Thanks!

 

Haha...looks like I'll have to go to the Apple store to find out for myself, regardless.

Thanks for the replies though.