need help with upgrade of virtualbox-ose

[Wojciech Puchar]

finally "succeeded" - i was able to upgrade to latest 10-stable while 
keeping vbox 5.0.26.

portdowngrade helped and one patch in kernel. thanks.

Still i would like to go to 5.1

>
> I had a similar problem running FreeBSD current on OSX machine.
> I had to downgrade the xorg-server from 1.18.4,1 to 1.17.4,1 the rebuild virtualbox-ose-additions and kernel.
it's certainly not X dependent as i don't run X on this server. headless 
or from VNC "x server" - both cases same result.