Fedora causes laptop to overheat

[Christopher Svanefalk]

Dear all,

I have been running Fedora since Werewolf. Recently, I had to start
dualbooting Windows XP because of collegework, and one of the things I
noticed rather fast was how much cooler my system runs under XP. Now I want
to know why.

On F16, my system will sometimes have the fans running at medium-high speed
even while idling and just Epiphany running (for Gmail and FB chat...this
does not to my knowledge generate anything else but sporadic cpu bursts and
occasional I/O). The HDD becomes unreasonably hot (despite iotop not
reporting significant disc activity apart from syslog and some
Gnome-specific daemons), and the CPU (Core2Duo) and VGA (Intel HD4500) also
seem to be running needlessly hot.

Does anyone know of a good way to debug exactly what is causing my system
to idle in this way? Obviously something somewhere is causing my hardware
to idle in a  very wrong way, and it would be helpful to nail down just
what the cause is.

Thanks in advance!

Chris
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