http://en.wikipedia.org/wiki/Crash_Reporter_(OS_X)
Crash Reporter is the standard crash reporter in Mac OS X.[1] Crash Reporter can send the crash logs to Apple Inc. for their engineers to review.
Crash Reporter has three modes of operations:
- Basic — The default mode. Only application crashes are reported, and the dialog does not contain any debugging information.
- Developer — In addition to application crashes, crashes are also displayed for background and system processes.
- Server — The default for OS X Server systems. No crash reports are shown to the user (though they are still logged).
- None — Disables the dialog prompt. Crash reports are neither displayed nor logged.
The developer tool CrashReporterPrefs can be used to change modes, as can using the terminal command defaults write com.apple.CrashReporter DialogType [basic|developer|server|none].