Recently, when running VirtualBox and creating new Virtual OS, it gives me this error "The VirtualBox kernel driver is not accessible to the current user. Make sure that the user has write permissions for /dev/vboxdrv by adding them to the vboxusers groups. You will need to logout for the change to take effect.." WHAT THE FFFFFFFFF??

What should i do?? Fortunately, there is solutions :)

Open Terminal

sudo apt-get install build-essential linux-source

sudo su

exit

sudo chmod 666 /dev/vboxdrv

sudo usermod -G vboxusers -a 

sudo /etc/init.d/gdm restart (or kdm restart if using kde)

Voila!! Problem solved!! :D