Eight steps to fix software which doesn’t work the way that it should: be your own Q&A expert.
preferences
How property list files store your preference settings, and how to access additional features.
What are the zero-length .lockfiles which have appeared in my Preferences folder?
Suddenly my Mac mini has started flashing the display instead of sounding an alert. How can I fix that?
Occasionally the display zooms to around 300%. How can I stop that from happening?
How can I fix copy and paste in Word so that the pasted content assumes the style of adjacent text?
How can I stop the Help viewer from pushing itself to the front?
I have been unable to get my Mac to connect to our new broadband service. How can I get it online?
A couple of preference settings, controlling automatic correction of spelling errors and ‘from’ addressing, that I have made in Mail keep becoming undone whenever I restart my Mac mini. How can I get them to persist properly?
Contacts launches but hangs when I try to use it.
The Eclectic Light Company 