MacBook Pro (CoreDuo) sometimes runs hot, with short battery life

I am having a somewhat intermittant problem with my MacBook Pro (CoreDuo 15"/1.83/1 Gig). I keep track of the computer using the widget iStat Pro, as I have found CoreDuo Temp to be pretty unreliable as far as temperature is concerned. Now, usually, I leave the computer on, but asleep and charging. Twice now, when I have awakened the computer for use on battery, it started running very warm, and was using the battery charge very quickly. For example, a few minutes ago, the battery was at about 90%, and the time left on the charge was well under 2 hours, while the temperature of the CPU was about 78 deg C. This was using the computer for web surfing. About 10 minutes after a restart, the CPU temperature is down to 53 deg C, and the battery life is up to 2:46, with 77% charge, values that I am more used to seeing. Since this is the second time I have seen this happen, I am beginning to get a bit worried. The computer is under AppleCare, so any problems will be covered by Apple, but this seems to be pretty unusual behavior. Should I contact Apple about this?
Thanks in advance.

First you ought to find out if you have any processes running that are hogging CPU time. Use Activity Monitor. Select All Processes from the drop down menu. Click on the CPU % column header to order a descending sort. Observe what processes may be using large amounts of CPU time when you observe the computer running very hot.

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Typing the body of the thread message in the title, huh? -)
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https://support.apple.com/kb/HT1461
http://www.apple.com/support/bootcamp/
Helpful Apple Support Resources (Forum Overview)
Boot Camp Support
Boot Camp Manuals
Boot Camp 5.0 Drivers
http://support.apple.com/kb/DL1638
Frequently asked question
http://support.apple.com/kb/HT4818
http://manuals.info.apple.com/en_US/boot_camp_install-setup_10.7.pdf
http://manuals.info.apple.com/en/Boot_Camp_Install-Setup_10.6.pdf
http://manuals.info.apple.com/en/Boot_Camp_Install-Setup_10.6.pdfcreate a Windows support software (drivers) CD or USB storage media
http://support.apple.com/kb/HT4407
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https://support.apple.com/kb/HT4569
http://manuals.info.apple.com/en_US/boot_camp_install-setup_10.8.pdf
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MacBook Pro (CoreDuo) sometimes runs hot, with short battery life

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