"This certainly isn’t the first time a defective antivirus signature has created some havoc among Windows users.
Remember the episode from April 2010 involving a McAfee definition that erased a key Windows system file and bricked
many thousands of enterprise systems worldwide?"
Most of us can remember an incident with avast!. It's also happened at AVG and many others.
I wouldn't start throwing bricks unless you're house is without windows.