segmentation errors in APT-GET

["Antonio Rodriguez" <Antonio@Memora.com>]

Has anyone had the following problems with apt-get:

I wanted to upgrade to slink but there were some broken packages (including
for some reason libc6) which I opted to fix with apt-get -f install and now
I am geting the following message:

Fetched 2038k in 0s (4561k/s)
Updating package file cache...done
Updating package status cache...done
Checking system integrity...ok
Segmentation fault
tintin:/home/arodrigz#

Does anyone know what "Segmentation fault" means?
(Or does it mean that I am hosed after having messed with the lib libraries)

A