@
Duckeenie,
Many Thanks...
Can you fill in a couple of blanks.?
> Where did you down load from.? 
Virtualbox Wiki or Synaptic.
The 
dkms, from what I have read takes care of VBox when you update the Kernel.
Maybe it gets installed along with VBox on a new install.?
Have you installed the "
Extension Pack" also on the above wiki page?
It's a download, then use VBox 
File > Preferences > Extensions to install it?
Have you installed the "
Guest additions" in your 12.04 Guest.?
I'm on 
4.3.32, the last in 4.x series
I installed it manually early in the year using instructions on the above VBox wiki page,
It then proceeded to update it'self whenever an update was available via the normal "
LL Install Updates".
I was hoping it was going to do that for 
5.x, but it appears not to want to.
	
Upgrades WIP 2.6 to 2.8 - (6 X 2.6 to 2.8 completed on: 20/02/16 All O.K )
Linux Lite 3.0 Humming on a ASRock N3070 Mobo ~ btrfs RAID 10 Install on 4 Disks  Computers Early days:
Computers Early days:
ZX Spectrum(1982) , HP-150 MS-DOS(1983) , Amstrad CPC464(1984) ,  BBC Micro B+64(1985) , My First PC HP-Vectra(1987)