Well, I couldn't remove ia32-libs. sudo apt-get purge ia32-libs does nothing.
I really don't want a 32-bit operating system when I have 8 GiB of RAM installed.
So I'm going to reinstall. I'll install and configure NFS (though not set up the users right away because that's more time), and then I'll make sure everything is working right. Then I'll try the printer again.
