ubuntu

Installed Drupal and it can be seen by the internet.

However, Drupal reports:
PHP extensions Disabled
Drupal requires you to enable the PHP extensions in the following list (see the system requirements page for more information):
gd

tried to install with:
suo apt-get install php5-gd

Returns this error:
@Fetched 37.5 kB in 0s (242 kB/s)
Selecting previously unselected package php5-gd.
(Reading database ... 205519 files and directories currently installed.)
Unpacking php5-gd (from .../php5-gd_5.3.10-1ubuntu3.1_i386.deb) ...
Processing triggers for libapache2-mod-php5 ... * Reloading web server config apache2 apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
[Fri Jun 08 21:10:05 2012] [warn] NameVirtualHost *:80 has no VirtualHosts
[Fri Jun 08 21:10:05 2012] [warn] NameVirtualHost *:80 has no VirtualHosts
[ OK ]
Setting up hdactl (4.1.11-1) ...
cp: cannot stat `/etc/networking.ubuntu': No such file or directory
dpkg: error processing hdactl (--configure):
subprocess installed post-installation script returned error exit status 1
Setting up php5-gd (5.3.10-1ubuntu3.1) ...
Errors were encountered while processing:
hdactl
E: Sub-process /usr/bin/dpkg returned an error code (1)
aljachimiak@ubuntu-DTAmahi:~$
@