My 550 didn't *use* to run hot, but now the fan kicks on in high gear with a high degree of regularity, even when it's doing not much more than serving audio via iTunes and running Firefox. Odd. I even did a new install of 10.3 On 12/1/04 4:17 PM, "Adam Boettiger" <adam.boettiger at pobox.com> wrote: > Mine's > running hot with the fan on all the time, regardless of whether it is > plugged in or running on battery power.