when you update linux kernel you need recompile virtual kernel,otherwise it couldn't work
p, li { white-space: pre-wrap; }
sudo /etc/init.d/vboxdrv setup
it will take about 3 mins ,what a long time~
in recent month i took the battery of the macbook out use the battery adapter directly,many times i broken down my macbook due to i carefulless ,i make the plugin out