Thanks for this!
I am just getting into LL. My regular OS is Ubuntu 14.04 on which I run various VB VMs. None of the Ubuntu forums had the right fix for this!
I have removed the guest packages AND changed the line to echo, but I still get the kernel service not running announcement/error at startup. Is there another possible solution?
I made a script wich worked for me (VMdebian8 jessie)
debian was missing some packages.
RUN IT IN YOUR VM !!
#!/bin/bash
# INSERT VBOXADDITIONS in your vm !!
su
apt-get update -q
apt-get upgrade -q
apt-get install -q linux-headers-`uname -r` make gcc dkms build-essential
mkdir /tmp/vbox
mount /dev/sr0 /media/cdrom0/
cp -rvf /media/cdrom0/* /tmp/vbox
cd /tmp/vbox/
./VBoxLinuxAdditions.run
reboot
I hope it's helpful

OK first post and I am a complete ICT numpty but re the virtualbox message, replacing notify-send with echo had no effect, totally removing both apps with virtualbox in the name also did not work. All by myself I had a little think, then remembering how I got Xpad to start on booting up by adding it to Startup I had a look in Settings>Settings Manager>Session and Startup, Application Autostart tab and sure enough there was 'vboxclient' with a tick by it, unchecking that worked... hope that helps somebody

(12-01-2015, 08:55 PM)misko_2083 link Wrote: [ -> ]If this appears when you run LL on a real hardware, it is because the script that runs VboxClient, in case when Vbox kernel module isn't detected sends a notification message.
Fix is next:
Run this in terminal (providing a sudo password)
Code:
gksudo leafpad /etc/X11/Xsession.d/98vboxadd-xclient
find the line
Code:
notify-send "VBoxClient: the VirtualBox kernel service is not running. Exiting."
Now change notify-send to echo
Code:
echo "VBoxClient: the VirtualBox kernel service is not running. Exiting."
And save the file.
On next reboot it will not appear again.
Cheers 
Did that but i still keep getting the message when i boot up the laptop
Any idea what might be causing it? Running LL2.8
Solved after disabling vboxclient in session and startup
I thin You "may have" missed editing the second file ...
do both ...
gksudo leafpad /etc/X11/Xsession.d/98vboxadd-xclient
gksudo leafpad /usr/bin/VboxClient-all
(05-13-2016, 09:54 AM)TMG1961 link Wrote: [ -> ]Solved after disabling vboxclient in session and startup
Glad it worked for you as well

, it worked on installations on two different laptops for me.