After "apt-get"ing tuxracer which required me for some reason to also install the latest version of gcc, g++, libc6 and libstdc++2.10, I could no longer compile anything. All the builds that I tried failed at the linker stage with missing symbols. Wishing for a backout option in apt-get, I thought I tried upgrading some other key library and development packages. I finally got the system back into a working state when I upgraded binutils which contains the gnu linker.