Trek had recalls in 2011, 2009, 2008, 2006.

Giant had recalls in 2012, 2010 and 2009.

Cannondale had a big one in 2009, and a couple in 2007.

It's just what happens when you sell massive numbers of bikes.

Specialized also doesn't manufacture the forks, they're made by other companies in Taiwan. My guess is that everyone (except Giant, maybe) outsources fork manufacturing.