From In Jerusalem, the Jerusalem Post's local supplement for Jerusalemites, comes a tale of politics and religion, scandal and blackmail - in the mehadrin (extra-stringent) department of the city's kashrut certification department. It disgusts me too much to repeat any of it here - Read it yourself.
Personally, there is an upside. Since I'm not one to succumb to rabbinically-decreed economic boycotts, this might be a good opportunity to dine in one of those always-crowded mehadrin establishments that are now being shunned by the haredi masses.
Ultimately, anyone who relies on occasional inspections and signed certificates to ensure kosher enforcement is somewhat naive about the restaurant business. The owners can easily outsmart the mashgiach if they feel the need. The upshot, as the owner of Angelo's restaurant notes in the last line of the article: "I think you need to trust the owner of an establishment more than the piece of paper on his wall." Very true.