Ubuntu removed support for /proc/bus/usb/*. See http://virtualbox.org/wiki/User_FAQ (search for "USB on Ubuntu/Gutsy").
The reason behind this can be found in bug 151585.
Ubuntu removed support for /proc/bus/usb/*. virtualbox. org/wiki/ User_FAQ (search for "USB on Ubuntu/Gutsy").
See http://
The reason behind this can be found in bug 151585.