SP2 Question?

Iv been meaning to post this for a fairwhile now, iv jus forgotten. Im just wondering if anyone could tell me why since I have installed SP2 on my PC when XP starts up and you have the bootscreen with the blue loading bar, why it doesnt say ‘Professional’ under Windows XP. It used to have ‘Professional’ under it and now theres nothing there? I have style Xp in use but i havnt changed the bootscreen and it happend before I had installed style xp.

its nothing major im just wondering if anyone knows why?