Implementation of the USB 2.0 Controller not found

if you get this error message after downloading and installing virtualbox 4.0.

Implementation of the USB 2.0 controller not found!
The device will be disabled. You can ignore this warning but there will be no USB 2.0 support in your VM. To fix this issue, either install the 'Oracle VM VirtualBox Extension Pack' or disable USB 2.0 support in the VM settings.

Just download the extension pack at this location

http://www.virtualbox.org/wiki/Downloads

Now, why is this not part of just one download? Why having a whole separate download? Please ORACLE we love Virtualbox at YCSoftware please do not mess it up.

Resolve NETBIOS Name in Ubuntu

First make sure that you can access the computer that you are trying to connect to via its internal IP address.

If you are able to do so , let’s move to the next step which is to check to see if you have “Winbind” installed.

dpkg -l | grep winbind

if it does not exist, install it using the following command;

sudo apt-get install winbind

Edit the /etc/nsswitch.conf and add “wins” to the “hosts” line

hosts: files  dns mdns4 wins

if the installation is successful, you are now ready to access your internal computers using their NETBIOS names.