Macbook not putting itself to sleep
Buried in the changelog of the latest NetNewsWire release:
Sleep
Fixed a bug that prevented automatic sleep for some people.
Which is interesting because for some time now my macbook has not been putting itself to sleep after the correct period of idleness (although a manual command to “sleep” worked fine). After shutting down NetNewsWire and leaving my machine idle for 5 minutes, it promptly went to sleep of it own accord. It would be interesting to know the technical details of this one.