system goes to infinite cycle when rebooting after installation

When running on VirtualBox, Karmic Beta goes to infinite cycle on rebooting after installation.
It drops to text mode and prints:
"init: ubiquity main process terminated with status 1
init: gdm main process terminated with status 1
init: gdm main process ended, respawning
init: ubiquity main process terminated with status 1
init: gdm main process terminated with status 1
init: gdm main process ended, respawning
init: ubiquity main process terminated with status 1
init: gdm main process terminated with status 1
init: gdm main process ended, respawning"
After this, graphical shell starts. Then, it prints the same text, then goes normal shutdown, and after that this:
"* Killing all remaining processes... [fail]"
Then, again ,goes normal shutdown, it prints
"Please renove the disc and close the tray (if any) then press ENTER:
_"
And then the grahpical shell shows up again, and all this repeats.
If I reboot the machine after simple live session or install Ubuntu from a live session everything is OK.
A video with the problem: http://www.mediafire.com/file/kj4mmz0mwj0/test-0000.mpeg