On the great spectrum of software complexity, iMovie falls pretty far to the left end, closer to the Mac OS X Calculator than to Microsoft Excel. It's a fairly streamlined application that only rarely leaves you scratching your head.
But with each successive version, iMovie becomes a more complex, larger program. There are very few glaring, ticking-time-bomb bugs—but a few doozies strike a few people now and then: photos that look awful on the finished DVD, mysteriously dropping volume when you apply titles or effects, projects that corrupt themselves, and so on. This chapter covers them all.