*** This bug is a duplicate of bug 201673 ***
https://bugs.launchpad.net/bugs/201673
Yep, it's bit a lot of people already. There's a ubuntuforums sticky
note on this with a number of suggestions for fixing it that work
(essentially replace new libc with old libc):
*** This bug is a duplicate of bug 201673 ***
https://bugs.launchpad.net/bugs/201673
** This bug has been marked a duplicate of bug 201673
Hardy: invalid pointer: 0xb7ef4b70 no program will start.
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libc6 upgrade fails, resulting in system wide crashes