sound of loading....

[patch god]

Ive asked this before but have had no answers so here we go:

all my burns make sort of squeeking sounds when loading (sometimes more or less depending on the media and burn speed). not loud though. if i put my ear real close to the ps2 i can hear it. It sounds like when the ps2 loads cd based games but only about 1 quarter as loud and vicious. the originals all sound quiet with a bit of soft squeeking and make deep clicking-like sounds (well not really clicks but loading-like sounds). is this somewhat normal or should my burns sound exactly the same as the originals? how do ur burns sound???