http://www.nytimes.com/2009/07/25/nyregion/25bear.html?hp

Now we just have to wait until their approval is revoked, again. It looks like BV's business model relies on selling you a new one every few months to replace the designs that fail.

I've got an original one with the replacement lid that isn't good for parts of the Sierra anymore. Good thing I haven't replaced it yet as these newer models will no doubt lose their certification as soon as this story gets around.