Confused about Coroutines

I'm almost convinced I'm seeing a bug, but this is an entirely new concept for me, so I need some help to understand what's going on. Here's a somewhat simplified version:

static function Initialize() { Debug.Log("EventManager.Initialize() called"); if (initialized) return; Debug.Log("EventManager.Initialize() 1"); eventQueue = new PriorityQueue(); initialized = true; Debug.Log("EventManager.Initialize() 2"); DoLoop(); Debug.Log("EventManager.Initialize() 3"); }

static private function DoLoop() { Debug.Log("Enter Loop()"); while (true) { Debug.Log("Top of Loop() loop"); while (eventQueue.Count) { // do something useful } Debug.Log("Before Loop() wait"); yield WaitForSeconds(1.0); } Debug.Log("Exit Loop()"); }

What's weird is I never see "Enter Loop()" in the console (or anything from DoLoop()), but I see the "Initialize 1", 2, and 3. If I comment out the while (true) loop, I'll see both the "Enter Loop()" and "Exit Loop()", but otherwise neither. What's going on?