I have an app that is crashing with no error tracing. I can see part of what is going on if I debug, but can\'t figure out which object is \"zombie-ing\".
As of Xcode 3.2.5 and Snow Leopard (Mac OS X 10.6), you can run your code through the Zombies instrument: Run > Run with Performance Tool > Zombies. That allows you to see particular objects and their retain counts on a timeline.