Installing Gnome

["Deepak, R." <deepakr@students.iiit.ac.in>]

I am installing Gnome.

"dpkg -l gnome gnome-desktop-environment" outputs:
    Desired=Unknown/Install/Remove/Purge/Hold
    | Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
    |/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
    ||/ Name           Version        Description
    +++-==============-==============-============================================
    un  gnome          <none>         (no description available)
    ii  gnome-desktop- 64             The GNOME Desktop Environment

When I try to login with Gnome, I get the desktop and icons but no panel.
When I start a terminal, it does not accept any input.

Failsafe Gnome gives just a blank screen.

"aptitude install gnome" outputs:
    Reading Package Lists... Done
    Building Dependency Tree
    Reading extended state information... Done
    E: Unable to correct problems, you have held broken packages.
    E: Unable to correct dependencies, some packages cannot be installed
    E: Unable to resolve some dependencies!
    Some packages had unmet dependencies.  This may mean that you have
    requested an impossible situation or if you are using the unstable
    distribution that some required packages have not yet been created
    or been moved out of Incoming.

    The following packages have unmet dependencies:
    gnome: Depends: gnome-office (= 64) but it is not installable

I do not need "gnome-office".

How can I install Gnome?
-- 
Deepak, R. <http://research.iiit.ac.in/~masatran/>