From http://forum.ubuntu-fr.org/viewtopic.php?id=914271 .
It does help, when you first boot as live CD and then remove ubiquity-slideshow-(xubuntu) packadge. you can do it from live session bu opening terminal and typing there: sudo apt-get remove ubiquity-slideshow-xubuntu. Instead of "xubuntu" use your distro name.
I did this on Lubuntu 12.04 and then started the installation from desktop icon and this time it went smoothly.
From http:// forum.ubuntu- fr.org/ viewtopic. php?id= 914271 . slideshow- (xubuntu) packadge. you can do it from live session bu opening terminal and typing there: sudo apt-get remove ubiquity- slideshow- xubuntu. Instead of "xubuntu" use your distro name.
It does help, when you first boot as live CD and then remove ubiquity-
I did this on Lubuntu 12.04 and then started the installation from desktop icon and this time it went smoothly.