09 Unibody getting very hot since 10.6.4 update

Hi.
I've recently updated my macbook (late 09 unibody) to 10.6.4, no problems working fine. However I've been noticing recently that the macbook has been getting very hot since the update. It's been reaching temperatures of 94C recently. It's never got that hot before and I'm not doing anything different either. It's been noticeably hotter whether it's been on the desk, on the laptop dock or on my lap.
Has anyone else experienced this?
-Matt

These fixes worked for me:
I downloaded and reapplied the combo updater.
I booted to safe mode, twice, and then went back to normal, and that combination has my macbook temp back down to normal levels. I also did some work on my iphone, definitely itunes was heating it up somehow.
http://appletoolbox.com/2010/06/slow-startup-in-mac-os-x-10-6-4-fixes/

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