Aloha ... A month or more ago I innocently installed a firmware update from Apple. Since then, if I put my Pro to sleep, the fan goes berserk when it wakes up. It takes off like a jet engine and roars so loudly you can't even talk over it; this goes on for a full two minutes before it starts to calm down. The first time it happened I thought a water truck was having problems getting up my hill ... it honestly sounds like a diesel engine straining up a grade. The only way to get it back to "full normal" is to reboot; on its own it quiets down to conversational levels, but not to its normal near-silent state. Other people have reported this problem, but Apple is ignoring it. I am now to the point of being afraid to install any more of Apple's "updates". I can't believe that having the fan run this hard and fast is not harming it; under no circumstances would it ever normally run that way. Has anyone out there heard of a viable solution? I can, of course, shut down the machine totally every night and re-start it every morning, but I would really like to have "sleep" back without all the racket! Is it possible to "uninstall" a firmware upgrade? Mac Pro, OS X 10.4.10 2 x 2.66 GHs Dual-Core Intel Xeon 4GB 667 MHz DDR-FB-DIMM SMC version 1.7f10 Teddi Stransky, Kahuku, Ka'u, Hawaii -- *-.,,.-*-;-*-.,,.-*-;-*-.,,.-*-;-*-.,,.-*-;-*-.,,.-*-;-*-.,,.-*-;-*-.,,.-*-;-*-.,,.-* ***E-mail is packed by intellectual weight, not by volume.*** ***Some settling may have occurred during transmission***