:~$ apt-cache policy xorg-driver-fglrx
xorg-driver-fglrx:
  Installed: 2:8.712-0ubuntu1
  Candidate: 2:8.723.1-0ubuntu4
  Version table:
     2:8.723.1-0ubuntu4 0
        500 http://it.archive.ubuntu.com lucid-proposed/restricted Packages
     2:8.723.1-0ubuntu3 0
        500 http://it.archive.ubuntu.com lucid/restricted Packages
 *** 2:8.712-0ubuntu1 0
        100 /var/lib/dpkg/status


:~$ sudo apt-get install fglrx
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  fglrx-amdcccle
The following NEW packages will be installed:
  fglrx fglrx-amdcccle
0 upgraded, 2 newly installed, 0 to remove and 1194 not upgraded.
Need to get 5101kB/23.3MB of archives.
After this operation, 69.2MB of additional disk space will be used.
Do you want to continue [Y/n]? 
(Reading database ... 109232 files and directories currently installed.)
Unpacking fglrx (from .../fglrx_2%3a8.723.1-0ubuntu4_i386.deb) ...
Processing triggers for man-db ...
Processing triggers for sreadahead ...
Setting up fglrx (2:8.723.1-0ubuntu4) ...
update-alternatives: using /usr/lib/fglrx/ld.so.conf to provide /etc/ld.so.conf.d/GL.conf (gl_conf) in auto mode.
update-initramfs: deferring update (trigger activated)
Loading new fglrx-8.723.1 DKMS files...
Building for architecture i386
Building initial module for 2.6.31-9-generic
Done.

fglrx.ko:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/2.6.31-9-generic/updates/dkms/

depmod....

DKMS: install Completed.
update-initramfs: deferring update (trigger activated)

Setting up fglrx-amdcccle (2:8.723.1-0ubuntu4) ...
Processing triggers for initramfs-tools ...
update-initramfs: Generating /boot/initrd.img-2.6.31-9-generic
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place