Smart meters not so smart?

Many residential customers in the PG&E service area are reporting large jumps in their electricity bill after new "Smart Meters" were installed, the problem is they didn't increase their usage! Here are a couple of interesting links:

http://www.mercurynews.com/breaking-news/ci_13801866

http://www.smartmeters.com/the-news/682-lawsuit-filed-against-pgae-for-smart-meter-overcharges.html

http://www.theregister.co.uk/2009/06/12/smart_grid_security_risks/