As of LM 19.1 this is a very old old version of Virtualbox; I suggest downloading the latest (6.x) from Oracle. Also to get full USB support you need to add your user to the 'vboxusers' group.
Delete Virtualbox for guest additions? Deleting Guest-Additions for Virtualbox? Nope.
Works just fine, has some problems with Fedora and FreeBSD, though... Would still recommend over VMware and VirtualPC
Stable, Flexible, Comprehensive virtualisation platform. I have Mint17, Win XP, 7, 2003, 2008, dos6.22 & FreeDos VMs