Ubuntu orange freeze login scream:

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After logging into ubunto the screen turns orange with a cursor and gnome does not load the window manager. The system seems to be frozen but it is not.
Hitting alt-Prnt Scrn pops up the print dialog.

Hit control-alt-backspace to restart gnome. At the logon prompt look at the bottom left of the screen and choose options: fail-safe terminal. Inside terminal Type:
sudo apt-get install gnome

if this errors out Type:
sudo dpkg --configure -a

Reboot and gnome should be working correctly.

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