In regards to the peanut outbreak in the US Yahoo News reported:

WASHINGTON – The food industry's private inspection system failed to catch filthy conditions at a peanut company blamed for a nationwide salmonella outbreak because the firm itself hired the inspectors, lawmakers said Thursday.

Of course this is an obvious conflict of interest.

The article describes how:

Last summer, Peanut Corp.'s private inspector, a company called AIB, awarded the peanut processer a certificate in 2008 for "superior" quality at its Plainview, Texas, plant.

Peanut Corp is the company in the US that has caused the biggest salmonella outbreak ever.

The article can be found here.