What has broken when Preview no longer opens PDF documents? The answer is more complex than it might appear.
logs
Memory use is always in the ‘yellow’, and my Mac grinds to a halt. Why?
I have seen a lot of spinning beachballs, and my NAS has been labouring. Why?
Can you explain why my Mac is so slow and shows the spinning beachball so much?
When I go to print, there is a very long pause between selecting the Print command and the appearance of the Print dialog. How can I cure this?
My iMac keeps stalling with the ‘spinning beachball’. Is this a memory problem?
You come into work to discover that your Mac or server have been hacked, or appears to be under the control of an intruder. What do you do next?
Whenever the bug occurred, it set the screen into a steady roll. The only way out was to pull down a menu command, no mean feat when pointer, menu bar and the whole caboodle are rolling past your eyes.
An outline of how apps run, to help you fix their problems, and decide whether more memory would help.
Macs are increasingly reliant on background services, and increasingly vulnerable to their problems. Mastering the services on your Mac will help make it faster and more stable.
The Eclectic Light Company 