Recently my Mac has been exhibiting two strange behaviours:

  1. Preferences for Safari and Windowshade return to their defaults on their own every few days.
  2. On occasions, when I select shut down, the computer does a reboot instead.

What can cause these?

  • Mac Pro 2012, 6 cores 3.33 Ghz
  • OS X 10.6.8 (no intentions to move to Mavericks)
  • OS X on SSD, user folder on HDD
  • outch....the shut down and reboot might be a indication of upcoming problem, so restore your OS X 10.6.8 (assuming you have a back up just in case)
    – Ruskes
    Mar 31, 2014 at 15:20


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