If you purchased a newly-built home in Ontario in the past 40 years or so, it likely came with warranty protection from the Tarion Warranty Corporation. It is sometimes the last hope for consumers locked in disputes with developers and homebuilders. But Tarion is not without its critics, and earlier this year, Ontario's Auditor General Bonnie Lysyk delved into the company's activities. She talks to Steve Paikin about what she found.