Original story (Senior Scientologist says no cover up) broadcast on AM, December 12, 2009; official correction listed on February 2, 2010 (see here).
On December 12, in a story about The Church of Scientology, the ABC's AM program reported that the organisation had "about a quarter of a million Australian members". This figure should have been attributed to the Scientologists themselves, based on their mailing list figures. The 2006 Census found the number of Australians identifying themselves as Scientologists to be 2,514. The story was corrected with an editorial note on December 23 that reads:
"Editor's Note: (December 23) These figures should have been attributed to the Church of Scientology which says it based the number on its mailing list. The 2006 census found the number of Australians identifying themselves as Scientologists to be 2,514."
Missed it by that much!
"From the Vault" - digging up past corrections and clarifications from the ABC archives (this one quite recent).