Reader 10.1.2 crashes, hangs, or nothing happens, when you try to print.
Not your symptoms? If the printer light blinks, prints only odd or even pages, or asks you to load paper, see Printer defaults to both sides | Reader, Acrobat 10.1.2.
The free 10.1.3 update to Reader solves this printing issue. You can install the update automatically from within Reader.
If you prefer, you can download and install the update yourself (scroll down to the update section of the page).