Many MacBook Pro owners started complaining after upgrading to OS X 10.11.4. The problem? The laptop froze randomly after the upgrade and while using Apple’s Safari browser. So far the only fix for this was a hard reset of the laptop, which no one wants to do often, it kills the hardware if done repeatedly. Apple has acknowledged this issue and starting with OS X 10.11.5 this problem seems to have gone away.
Here is the fix :
- Update OS X to the latest version 10.11.5
- Update your Adobe Flash plugin, if installed
Although the above steps helped some users, there a few who still struggle, despite following these instructions.