Olam is one of the world's largest rice, cotton, and peanut traders. Olam's second-largest shareholder is Singapore government-controlled Temasek Holdings.
Block has gained a reputation for collapsing the stock prices of listed Chinese companies, although Olam is Singaporean with few interests in China.
Among examples of what Block alleged were irregularities in Olam's accounts was the firm's acquisition of NZFSU, in which it now owns a 94 per cent stake, and the publication of the words "fudge this to equal depreciation in FA note 11S 2391" in a note to the 2009 accounts which the company said should have been edited, but were not sinister.
NZFSU issued a statement at the time saying "while the words in the comment were not well chosen, they were merely a prompt for the author of the financial statements to reconfirm the rounding difference expressed in an early draft where there was a minor rounding discrepancy."
FT Alphaville, a daily Financial Times blog looking behind news headlines picked the issue up today, suggesting NZFSU had embarrassed itself but not hurt anyone.
"We kinda feel for the person who put the accounts together," the FT Alphaville authors write. "Have you ever felt the elation of actually getting a balance sheet to balance? Depreciation, as a non-cash item, has to be backed out. But it's often not that easy.
"Overall, ending up with a rounding error doesn't seem too weird."
While Olam shares fell 7.5 per cent immediately after Block's comments the day before yesterday, they rose 5.3 per cent yesterday to be the best-performing stock on Singapore's Straits-Times index.
The stock was quoted unchanged at S$1.695 on the Singapore Stock Exchange this morning, having fallen 24 per cent over the course of this year.