libc broken?

[Raul Montagne <montagneraul@netscape.net>]

Hi!
Suppose that when I was trying to apt-get install imagemagick
and upgrading "some" libraries, one of the libraries was libc6...
and was not completely upgraded....it might be broken giving as a result
an useless linux installation....isn't it?
In fact, the booting process just freezes!

1.- how can I check which was the last package tried to install
(apt-log? dpkg-something?)
2.-In case I have a libc6 or akind, is  it there any way to
fix it without installing everything from scratch?

thanks
talueguito
raul