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I just looked in the OS X Console, and noticed that there's a huge number of errors looking like this:

6/12/12 8:33:16.000 PM kernel: SMC::smcReadKeyAction ERROR F1Mn kSMCBadArgumentError(0x89) fKeyHashTable=0x0xffffff800a715000

There's one almost exactly every 5 seconds. Any ideas?

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up vote 1 down vote accepted

Are you on OS X 10.7.4 ?
Then an explanation and possible solution might be found here on CNet:

Tackling SMC console errors after OS X 10.7.4 update

"Might", because it didn't work for me - even after uninstalling iStat Menus v2.x, so it must be some other application(s) on my part that is causing this...

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Thanks a lot! Uninstalling Fan Control fixed the problem for me. – houbysoft Jul 2 '12 at 13:22
btw, I reset the SMC controller after uninstalling. Perhaps you need to do that to make it work for you too? – houbysoft Jul 2 '12 at 13:28


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We're looking for long answers that provide some explanation and context. Don't just give a one-line answer; explain why your answer is right, ideally with citations. Answers that don't include explanations may be removed.

Just tried, unfortunately it didn't fix the problem... – houbysoft Jun 18 '12 at 4:54

On 10.7.5 uninstalling IStatMenus 4 solved it for me.

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