If you're on later versions of MacOS... there can be issues. The MacOS crash reporter may take a very long time to gather the crash report data (especially on 10.7 and later). Since the Adobe crash reporter needs to run after the Apple crash reporter - it may time out and not run. Sometimes subsequent crash reports will be generated faster and the Adobe crash reporter will get a chance to run. Faster machines generally have a better chance of the crash reporter running - since the OS crash reporter will run faster.