aptitude search virtualbox-3.2
c   virtualbox-3.2                                                                                                 - Oracle VM VirtualBox
root@Core:~# aptitude show virtualbox-3.2
No current or candidate version found for virtualbox-3.2
Package: virtualbox-3.2
New: yes
State: not installed
Version: 3.2.12-68302~Ubuntu~lucid
Priority: optional
Section: non-free/misc
Maintainer: Oracle Corporation <info@virtualbox.org>
Uncompressed Size: 97.1M
Depends: libc6 (>= 2.11), libcurl3 (>= 7.16.2-1), libgcc1 (>= 1:4.1.1), libgl1-mesa-glx | libgl1, libpng12-0 (>= 1.2.13-4), libpython2.6 (>= 2.6), libqt4-network (>= 4:4.5.3), libqt4-opengl (>= 4:4.5.3), libqtcore4 (>= 4:4.6.1),
         libqtgui4 (>= 4:4.6.1), libsdl1.2debian (>= 1.2.10-1), libssl0.9.8 (>= 0.9.8k-1), libstdc++6 (>= 4.4.0), libx11-6 (>= 0), libxcursor1 (> 1.1.2), libxext6 (>= 0), libxinerama1, libxml2 (>= 2.7.4), libxmu6, libxt6, zlib1g (>=
         1:1.1.4), psmisc, adduser
PreDepends: debconf (>= 1.1) | debconf-2.0
Recommends: libasound2, libpulse0, libsdl-ttf2.0-0, dkms, linux-headers, gcc, make, binutils, libhal1 (>= 0.5), pdf-viewer, libgl1, python-central
Conflicts: virtualbox, virtualbox-ose
Replaces: virtualbox
Provides: virtualbox
Description: Oracle VM VirtualBox
 VirtualBox is a powerful PC virtualization solution allowing you to run a wide range of PC operating systems on your Linux system. This includes Windows, Linux, FreeBSD, DOS, OpenBSD and others. VirtualBox comes with a broad feature set
 and excellent performance, making it the premier virtualization software solution on the market.

root@Core:~# aptitude install virtualbox-3.2
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done
No candidate version found for virtualbox-3.2
No candidate version found for virtualbox-3.2
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0B of archives. After unpacking 0B will be used.
Writing extended state information... Done
Reading package lists... Done
Building dependency tree
Reading state information... Done
Reading extended state information
Initializing package states... Done

root@Core:~#