My PS3 sounds like a jet engine lately

[jorg]

if your ps3 is older then a couple months and enclosed just use this its the ps3's built in fan test to clean it out
heres a video of how to do(for 60 gig)
http://www.youtube.com/watch?v=lbA1Jc8D1yc
for more detail its here

How to clean your PS3 40gig not 60gig by testing your fans, I was talking to some random guy I meet at a game stop and he told me what to do. I’m sure you can see a video demonstrating how to test the fan online. The only difference is I will be holding the PS3 off of the table so the fan part of the PS3 will be facing down.
1.
First turn off the PS3, take off all cables except the power cable, and then place the PS3 vertically with the PS3 logo being upside down.
2.
Ok hold down the eject button, and turn on the PS3. Immediately pick the PS3 up off of the table about five to six inches, so the air can circulate with out bringing back in the dust. This would run for twenty seconds, the red light power light would flash.
3.
Flip the PS3 so the logo would be right side up, and turn the PS3 off and then on. The guy told me it helped quiet his PS3.

http://www.ps3hax.net/other-misc-tut...-fan-test.html