Incoming call picture question

[drumvudu]

Why is it that sometimes when I receive a new call, the picture of the person calling is displayed in a small window in the top right of the screen and others are full screen? I have looked everywhere for a setting for this and cannot find an answer. This is on a 3gs but it shouldn't matter cause it did it on my 1st gen as well.

 

[drumvudu]

I am very much interested in the answer this question too.

Well, At least I know I'm not alone.

 

[iCrank]

Hmm. I would like to know myself but all my calls display the plbig picture.