It's triggered when using Chrome and visiting this page http://www.gmb.org.uk/pdf/SX%20Gullible%20and%20Guilty%20v7b.pdf
Chrome says 'waiting for cache' and Intercheck goes into overdrive. Force Quit of Chrome. Intercheck still maxed out. Force quite of Intercheck and up it pops again like a bad penny. Try to retstart the iMac and you can't...spinning wheel. Only way is to pull out the mains plug.
Safari accesses the website OK.
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