I was having a similar problem, in that installing ia32-libs wanted to remove the xorg quantal-lts packages. I just tested with apt 0.8.16~exp12ubuntu10.9 from proposed, and apt-get no longer wants to remove the quantal-lts xorg packages.
I was having a similar problem, in that installing ia32-libs wanted to remove the xorg quantal-lts packages. I just tested with apt 0.8.16~ exp12ubuntu10. 9 from proposed, and apt-get no longer wants to remove the quantal-lts xorg packages.