Did Microsoft screw up the Xbox 360?

According to the Xbox 360 forums the March Xbox 360 update is bricking 360’s left and right.

after the update its frozen about 12 times…

Mine keeps freezing, with white lines on the screen and a loud noise. Then recently started giving me the three red lights…

A guy I work with had his 360 die last night, a few days after he updated. The rumor is the update slowed down the fan speed on one of the heatsinks, but due to a manufacturing flaw that caused some customers to have a piece of foil next to one of their heatsinks, the reduced fan speed is overheating the poor thing. D’oh.