I was looking at the content of my /lib variations. Very interesting. The testing one I am using now las libc.so.6 -> libc-2.13.so dated May 12. The "sid" one I copied from the segfaulting /lib has libc.so.6 -> libc-2.11.2.so dated JUNE!
Something is amiss here, huh? All the 2.13 files, symlinks are from May All the 2.11.2 files, symlinks are from June (which is when I downgraded). Question would be why the sid files point to older libraries after upgrading in June? What library path is used for init which does work? There is a libc.so in /usr/lib/i386-linux-gnu of the same June date.