Re-setup the kernel module Virtual Box vboxdrv

[SonicSteve]

Morning friends,
I'm not sure if this happens after every update, or if something else causes this to happen but...
Virtual box is continually giving me this message when I try to launch any one of my virtual machine installations. It doesn't do it every time but usually a few times per week.

VirtualBox kernel driver not installed. The vboxdrv kernel module was either not loaded or /dev/vboxdrv was not created for some reason. Re-setup the kernel module by executing '/etc/init.d/vboxdrv setup' as root.
VBox status code: -1908 (VERR_VM_DRIVER_NOT_INSTALLED).


Result Code:
0x80004005
Component:
Console
Interface:
IConsole {1dea5c4b-0753-4193-b909-22330f64ec45}

If I do as it asks and run;
'/etc/init.d/vboxdrv setup' as root.
It works perfectly again, but I'm trying to find out why it's happening in the first place, or if anyone else is experiencing it and we are all just accepting it in silence.