Well,
As a new strategic to move people out of windows, i am using virtualbox as  a replacement for old applications that only works on windows. So I use an unattended method to install those vboxes.

A few weeks back I found a problem when enable extra funcions (add-ons) for an smooth use of the machine. and i was 100% that the problem  was on virtualbox software, but I could not know how to present it for the development teams to have a look.

My surprise was today that  someone using same software  reported the problem a month ago and today the fix was  release con the 3.0.8 version.
Love open source!