brand new Mac Pro tower fan suddenly runs full-tilt, CPU is idle
At first I thought this was just because I was hitting the CPU a bit (importing my iPhone library into iLife '09, and running Eclipse). But I tried powering it off & letting it cool down for a few minutes to no avail; about 10 seconds after powering up, the box gets loud again. I took a look at it with the side cover off, and it seems to be the fan near the top middle, between the power supply and the disk drive.
It can't be a dust issue, as the machine is only 2 days old (and I peeked inside anyway just to be sure- clean). I did do a software update over the past 24 hours or so, but I can't say that it occurred immediately after that. I also did a migration of my old apps and data from my MBPro, for what it's worth.
Why is it suddenly so loud? How can I monitor the fan speed and various system temperatures?
Thanks
EDIT: Activity Monitor shows a virtually idle CPU; there's nothing running that ought to be causing this, as far as I can tell.
Here are my temps: http://imgur.com/J6BLf.png
Message was edited by: armhold
Late 2009 Mac Pro Quad Core 2.93GHz, Mac OS X (10.5.1), added temps