Latest 10.8.5 mod slowed my computer - kernel_task cpu issue

Installed the 10.8.5 supplemental mods and the Java update last night.  After doing so, the kernel_task cpu issue - which I had eliminated a year ago - has come back.  It is making time-machine unusable in both normal and safe mode.  How do I fix?  Backing out or restoring to previous time machine settings seems impossible due to the processing speeds.  Reinstall??

Final answer!  This was a case where the 10.8.5 updates overwrote / reinstalled the "plist" files which control the power throttling of the CPU.  The pasted link has a whole discussion and fix with the details.  I had run with this fix since Aug 2012 and this was the first Mountain Lion upgrade that caused me to re-do it.  As an FYI, there are RISKS specified with this fix, but in my case I have not come close to having excessive temps or any functional issues.
http://www.rdoxenham.com/?p=259&cpage=2#comment-22586

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