Terminal shared cache different libSystem.dylib

When Terminal.app stated, now getting following message. Is it serious?
dyld: shared cached file was build against a different libSystem.dylib, ignoring cache
How do I clear it - What cache and where is it?
Snow installed from scratch, clean, fresh. Been adding other vendors.

From http://discussions.apple.com/thread.jspa?threadID=1260029
try this:
*sudo updatedyld_sharedcache -force*
BTW, Terminal queries are best handled at the Unix forum under OS X Technologies.

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    We have been suffering this too. Fortunatly, finally, we figure out how to clear the share cache via Safe Boot now. Sharing with everybody:
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