Run the following commands in Terminal to install VirtualBox 5.0.20 on Ubuntu 15.10: Sudo sh -c 'echo 'deb xenial contrib non-free' > /etc/apt//virtualbox.list' Run the following commands in Terminal to install VirtualBox 5.0.20 on Ubuntu 16.04:

Install VirtualBox 5.0.20 on Ubuntu Systems Windows Additions: fixed performance issues with PowerPoint 2010 and the WDDM graphics drivers if Aero is disabled.Windows hosts: make it work on Windows XP again (5.0.18 regression).Windows hosts: another fix for recent Windows 10 insider builds (bug #15337).Linux hosts: fix for Linux 4.5 if CONFIG_NET_CLS_ACT is enabled (bug #15327).VBoxManage: list processor features on list hostinfo (bug #15334).Guest Control: various bugfixes for the copyfrom and copyto commands / API (bug #14336).Snapshots: don’t crash when restoring a snapshot which has more network adapters than the current state (ie when the snapshot uses ICH9 and the current state uses PIIX3).NAT: rewrite host resolver to handle more query types and make it asynchronous so that a stalled lookup doesn’t block all NAT traffic.NAT: rework handling of port-forwarding rules (bug #13570).NAT Network: support TCP in DNS proxy (same problem as in bug #14736 for NAT).Storage: several emulation fixes in the BusLogic SCSI controller emulation.

Storage: fixed a regression causing write requests from the BIOS to cause a Guru Meditation with the LsiLogic SCSI controller (5.0.18 regression bug #15317).

Virtualbox ubuntu 16.04