Same issue as @monkeyman04 and @contagious. I'm Running OS 10.8.4 here, browsing in Chrome 28. The only extension that I've had on when the problem occurred is AdBlock Plus, but the problem persists when it's off. Noticed on Worth Reading 08/02/2013 and the Shadowrun: Returns review.
However, as @rorie suggested, running in incognito mode solved the issue. The issue still persists for regular (non-incognito) Chrome. Hope any of this additional info helped.
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