your joking * right *

i posted three times, either I'm not doing something right or post is somewhere else on the site?
anyways i have a Imac 2.0 duo intel, 20", on boot up it shows a folder with a question mark, runs fine but can anyone tell me what it might be? thanks

My joking... what?

Seriously, your thread was moved to the proper forum and it has received a response:
http://www.mac-forums.com/forums/os-x-operating-system/129860-folder-pops-up-saying.html