No idea how it got missed, but simple "hello world" C programs wouldn't compile due to a missing "libgcc_s.so --> libgcc_s.so.1" symlink. If "ldconfig" is responsible for creating that symlink, then "ldconfig" is broken. "libc-bin" on my system is version 2.11.2-13. I'm guessing some kind of multi-arch transition issue. --Bob