Randomly adding groups that don't exist on default installs is a bad idea.
To make lonewolfs posts obsolete, one should read the manual better, as it says this:
The GID '85' he's talking about is in the section that describes OLDER systems. That would mean systems of 2 years and older. I wouldn't call OpenSuSE 11 'old'.User Manual wrote:If USB is not working on your Linux host, make sure that the current user is a member of the vboxusers group. On older hosts, you need to make sure that the user has permission to access the USB filesystem (usbfs), which VirtualBox relies on to retrieve valid information about your host's USB devices. The rest of this section only applies to those older systems.