Comment 4 for bug 108568

From the log it looks like the CD has a problem. Could you please run the cdrom test (boot from the cd and choose "Check CD") to see if it is ok?

Preparing to replace gnome-power-manager 2.16.1-0ubuntu3 (using .../gnome-power-manager_2.18.2-0ubuntu3_i386.deb) ...
Unpacking replacement gnome-power-manager ...
dpkg-deb (subprocess): error in buffer_read(stream): failed to write to pipe in copy: Input/output error
dpkg-deb: subprocess paste returned error exit status 2
dpkg: error processing /cdrom//pool/main/g/gnome-power-manager/gnome-power-manager_2.18.2-0ubuntu3_i386.deb (--unpack):
 short read in buffer_copy (backend dpkg-deb during `./usr/share/icons/hicolor/scalable/apps/gpm-keyboard-060.svg')
dpkg: error processing /cdrom//pool/main/libg/libgda2/libgda2-common_1.2.4-0ubuntu1_all.deb (--unpack):
 cannot access archive: No such file or directory
dpkg: error processing /cdrom//pool/main/libg/libgda2/libgda2-3_1.2.4-0ubuntu1_i386.deb (--unpack):
 cannot access archive: No such file or directory
dpkg: error processing /cdrom//pool/main/libx/libxpm/xpmutils_3.5.6-1_i386.deb (--unpack):

Thanks,
 Michael