This is my wife's Mac Book it's sitting in the livingroom (well ventilated) I'm thinking the fan is shot We have done an archive and install with Leopard. yesterday, I put Tiger on a USB external and booted from that and it was absolutely silent for a long time, but eventually the noise started again. I wiped the drive and did a clean install of Leopard and updated it to 10.5.5, thinking it might be 10.5.6 that was causing the problem. Nope. I tried both of the utilities that were mentioned and nothing made any difference. is there a place in London we can buy a Mac Book fan from? ---- Scott Strawbridge | Graphic Artist scotts1@xxxxxxx scott@xxxxxxxxxxxxxxxxxxxxxxx http://www.liquidphoenixdesign.com tel:(519) 474-2754 iChat: scotts1 --- MUGLO information at <http://www.freewebs.com/muglo> Manage your account options at <//www.freelists.org/cgi-bin/lsg2.cgi>