mdworker Error (To be updated)

I don't know when did I start to have the common OS X 10.8.2 error:

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5/24/13 8:52:38.838 AM mdworker[597]: Unable to talk to lsboxd
5/24/13 8:52:38.996 AM sandboxd[598]: ([597]) mdworker(597) deny mach-lookup com.apple.ls.boxd

I was directed to a safe-boot, but due to some unclear reason my mac cannot do so unless I remove one of its RAMs. Details are in Macbook Safe Boot Adventure.

Unfortunately the error came back. It still doesn't bother much compared to my Macbook Pro's inability to safe boot though. I started reading Mac OS X Internals: The Book, so I decided to get some precise information about this error.

Google is amazing, and I found this post. The post points the cause to 3rd party mdimporters, which is the most feasible I have read. Assuming Apple should have resolved the issue for their own softwares, I suspect MS Office suite and TeX suite most. I will update after trial.