> Geoffrey Rosenberg wrote: > >> Any ideas about your fan use - I never heard a fan ever until my >> logic >> board failed and needed replacement, ... >> Now I am just finding the fan come on and stay on without >> letup unless I reboot. The unit is ice cold, too... >> >> I think this all started after I added the battery update 1.1 or else >> the >> 10.3.1 update, but am not certain. I was unable to install 10.3.1 on my iBook 900Mhz. As for the fan, I can hear it in my iBook 700Mhz, but never in my 900Mhz. I am also having a heat issue. Fortunately, I did invest in the Apple Care Protection Plan. David