PS3 disc getting "stuck"?

well i got a new 80gb about a 3-4 days ago after i gave 60gb back to sony.

while playing games(discs), i think the disc sometimes gets stuck. the ps3 makes a funny noise. a noise kind of like its trying to spin the disc but its getting stuck on something,and if im on a load screen, the game freezes until the ps3 fixes itself.

its kind of sounds like the ps3 is stopping and starting reading the disc again and again

Its happened a few times now.

i didnt happen on my old 60gb, or i think so anyway.

1) clean the disk!!!

2)(if u still have the guarrantee)..then re-send it!!!

3) if repaires is refused for some RANDOM reason......ur screwed..lol

the thing is, this is my 3rd ps3 and im gonna by mighty pissed if i have to send it back considering i just got a replacement under a week ago.

i cleaned the disc now, and if it happens again, sony is getting a call.

first ps3 got disc read error, 2nd just died with cod5 inside and if this breaks.......