Nah, it sounds like that. If it's the cam chain, it will make a slight clicking noise when the bike is first started and it goes away as the bike warms up.
The busa power plant is pretty noisy. My '03 used to make me wonder all the time until I asked an experienced mechanic/Busa rider about it and he said, "Sounds fine to me!"
I've never worried about it since!
--Wag--