Fix Ubuntu 10.10 screen size on VirtualBox 

Issue:

You have downloaded and installed Ubuntu 10.10 on Virtual Box, but your widescreen 16:9 monitor is displaying Ubuntu as a 4:9 screen with black bands down either side.

What do you do?

–> Accessories –> Terminal)
Type
sudo apt-get update

Type,
sudo apt-get install build-essential linux-headers-$(uname -r)

Now, type

sudo apt-get install virtualbox-ose-guest-x11

Restart and check the screen size, seamless and full screen mode on ubuntu 10.10, all should work.
Let me know how it worked for you.

Links to this topic:

http://www.sysprobs.com/maverick-meerkat-ubuntu-1010-virtualbox-328-ubuntu-1010-guest-additions-fix