We recently visited our local Apple Store for an hour-long free workshop on features of Pages (part of iWork). What a fantastic opportunity! Result: I wrote a long letter using Pages last week and saved it to send as a .pdf file. The person leading the workshop was just the right mix of youth and upbeat clarity. She even promised to work on a particular problem and get back to us.
Meantime, "Q&A: Maintaining the Mac" at the NY Times (Dec 3rd) has some fascinating information:
The Mac system also automatically runs many routine maintenance chores in the background, like purging unneeded system logs or temporary files. By default, the Mac usually does its self-maintenance between 3:15 to 5:30 in the morning (in the computer’s local time zone) as long as the machine is left on and is not in sleep mode.