Hydro install hangs on "ldconfig deferred processing now taking place"

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Hello,

I am an existing ROS Groovy user on my Ubuntu 12.04 machine. I have been trying to install ROS Hydro using

sudo apt-get install ros-hydro-desktop-full

but no matter what I do, the installation suddenly stops at the following:

Setting up ros-hydro-rqt-tf-tree (0.3.3-0precise-20140130-2331-+0000) ...
Setting up ros-hydro-rqt-robot-plugins (0.3.3-0precise-20140208-0437-+0000) ...
Setting up ros-hydro-stage (4.1.1-5precise-20140130-1745-+0000) ...
Setting up ros-hydro-stage-ros (1.7.2-0precise-20140201-1433-+0000) ...
Setting up ros-hydro-simulators (1.0.2-0precise-20140208-0545-+0000) ...
Setting up ros-hydro-desktop-full (1.0.2-0precise-20140208-0614-+0000) ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
turtlebot@TurtleBook:~$

If I try to run the install again, I get:

ros-hydro-desktop-full is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 114 not upgraded.

..but I can clearly see it has not installed as opt/ros/hydro has no "stacks" folder.

I can repeat the process by calling apt-get remove and then apt-get autoremove, but it never completes properly. I've tried using a different internet connection and that doesn't help anything.

Does anyone know why this happens? If I need to provide more information on my setup, please do let me know.

Thanks in advance.