as seen in:
$ VboxManage list usbhost
(they are also greyed out in all the pesky dialog boxens).
[...time passes...] Having spent several hours in the fascinating process of pulling hair out of my head, i found that you have to:
- add yourself to the vboxusers group that VirtualBOx creates
- disregard notices abour mounting usbfs and whatnot (that's for old systems apparently)
$ sg vboxusers VirtualBox
$ newgrp vboxusers
It appears that VirtualBox sets everything for the vboxusers group to work, however, it does not bother to newgrp into it. How's that for great fun.