[root@jonas tmp]# /etc/init.d/vboxdrv setup
Stopping VirtualBox kernel module [ OK ]
Recompiling VirtualBox kernel module [FAILED]
(Look at /var/log/vbox-install.log to find out what went wrong)

/var/log/vbox-install.log says :

Makefile:142: *** Error: unable to find the sources of your current Linux kernel. Specify KERN_DIR=<directory> and run Make again. Stop.
~

Can someone help me please ? I don't know just what to do...

I think that the kernel-headers are missing but that's a wide guess...

Yep, that look like the problem. Install the kernel headers and try again. If it's already there then, consider providing the path with 'KERN_DIR=" as the error log suggests.

Hey,
I had the same problem with #/etc/init.d/vboxdrv setup
"$yum install kernel-devel" told me the headers were already installed. All I had to do was add the specific core. ( If you don't know your release use "#uname -r")
For example:

Hi guys,
I have the same problem on Fedora Core 9 (64bit). I tried your suggestion chakra and yum told me "No package 2.6.26.6-79.fc9.x86_64 available."
Any suggestions?
Thanks in advance,
SpaceChimp