Fedora 9 On Laptop battery

[Fastie]

Hi

I have been working on Fedora since Core 6, and found that now I've moved
i've had to start using my battery more on my laptop than I used to. So my
battery just doesn't last. I  got myself a replacement thinking that my
battery is dead but still had the same result.
I am running an HP NC6320 laptop with nothing extra (clean install). My
brightness is on the lowest setting.
I went through my services and stopped all the ones I don't need and
installed powertop and did what it told me to do, (but it is not permanent
for one).
According to HP my battery should last about 4 hours, however I only get
about 1.5 hours if I am lucky. I have to say when I was testing this on
Windows I did not get 4 hours as HP say but got about 3 hours. So running
Fedora cut my battery time in half.
One thing I did see on powertop is that my "Wakeups-from-idle per second" is
running at "669.1    interval: 10.0s", this looks high. How do you reduce
this?
Is there anything else I can do to get more battery power out of it?

Thanks
Chris
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