Two points:1. The libstdc++6-4.3-dbg library was installed - see the "Listing installed packages matching libstdc++6*". Have you tried running the script? 2. I thought that the idea of a "-dbg" library was to supply the source code at a fixed, known location and the stripped debugging information from the binaries, compiled with -g. Should all packages come with a -dbg library specially compiled with --enable-*-debug?
Philip