Hi,
I've just bought a new MacBook, and been thoroughly enjoying using it for many things, but since last week the fan has been on practically non-stop. Of course it eventually stops when I put it to sleep, but within a minute or two of use it's back on again.

This is a problem if I want to use it to record audio, and as a music workstation. I'm thinking of taking it back while the warranty is still valid, but I'd rather not now that I have all the things I want installed on it.

My iBook's fan didn't come on nearly as much, and I used it the same amount. If anyone can help, I'd appreciate it.

the fans are always on, when CPU load is minimal they don't spin very fast and it should be slightly audible

check activity monitor (Applications/Utilities/Activity Monitor) if the CPU load is high, that's the reason the fans a spinning fast.

see this for a possible resolution....

http://support.apple.com/kb/TS1473

Wow, that was easy...

Thanks! I feel empowered

It was something called switch that was using 86% of the CPU, so I forced it to quit.

Hope I haven't stopped a vital function of the computer have I ???

86% of the CPU on a macbook? It must have been something that crashed in the backyard… Most services don't use that much CPU, if they do, they are in a loophole.

Now I don't know what it is either…

yep,
it was stuck in a loophole as you say, and using activity monitor fixed it. I guess I'm learning a bit more each day.

Talking of which, I fixed the memory problem in the iBook (by going in as a superuser and cleaning up)... however, (NEW TOPIC) I want to run an OS9 program on the iBook, and remembered that although I have the option of emulating it in "classic", I no longer have it on the System folder containing the emulator, just the icon (I remember getting rid of it thinking I wouldn't need it I think ).

Now I went and got a macbook, which also runs OSX 4.11 like the iBook, but unlike the iBook there's no Classic icon in its system preferences. Any suggestions?

Thanks!