You don't need to reinstall Linux, if that is what you intend to do. Just install the stable potato libc6 and friends and you will be fine.
This information will show you which files you need to grab: http://togo.dhs.org/woody-libc-downgrade.html All I did was to copy ldconfig from my other machine to this one, then I reinstalled: libc6_2.1.3-13_i386.deb libc6-dev_2.1.3-13_i386.deb libdb2_2.4.14-2.7.7.1.c_i386.deb libdb2-dev_2.4.14-2.7.7.1.c_i386.deb libdb2-util_2.4.14-2.7.7.1.c.deb locales_2.1.3-13_i386.deb -- Andrew