Set number of minutes until system sleeps or shuts down - very
effective when leaving big processes running.
Also, has cool 'Backup Sleep' function if shutdown is prevented by a
save-dialog or other user prompt (engages within 30-seconds).
Compatibility
Architecture: PPC x86 (Intel)
PowerPC G4, G5 or Intel Mac (with Rosetta) Running OSX 10.4-10.6