Dear Maintainer, I previously observed this bug when updating my libc6 packages from 2.18-4 to 2.18-5. Today I upgraded to 2.18-7, and the bug surfaced again.
apt history.log Start-Date: 2014-05-31 09:27:11 Commandline: /usr/sbin/synaptic Upgrade: libc-dev-bin:amd64 (2.18-5, 2.18-7), libc-bin:amd64 (2.18-5, 2.18-7), libc6:amd64 (2.18-5, 2.18-7), libc6:i386 (2.18-5, 2.18-7), libc6-i386:amd64 (2.18-5, 2.18-7), libc6-dev:amd64 (2.18-5, 2.18-7) Error: Sub-process /usr/bin/dpkg returned an error code (1) End-Date: 2014-05-31 09:27:14 Start-Date: 2014-05-31 09:27:55 Commandline: /usr/sbin/synaptic Upgrade: libc-dev-bin:amd64 (2.18-5, 2.18-7), libc6:amd64 (2.18-5, 2.18-7), libc6-i386:amd64 (2.18-5, 2.18-7), libc6-dev:amd64 (2.18-5, 2.18-7) Error: Sub-process /usr/bin/dpkg returned an error code (1) End-Date: 2014-05-31 09:27:58 Start-Date: 2014-05-31 09:28:40 Commandline: apt-get install -f Upgrade: libc6:amd64 (2.18-5, 2.18-7) End-Date: 2014-05-31 09:28:45 term.log Preparing to unpack .../libc-bin_2.18-7_amd64.deb ... Unpacking libc-bin (2.18-7) over (2.18-5) ... Replaced by files in installed package manpages (3.65-1) ... Preparing to unpack .../archives/libc6_2.18-7_i386.deb ... De-configuring libc6:amd64 (2.18-5) ... Unpacking libc6:i386 (2.18-7) over (2.18-5) ... Preparing to unpack .../libc6_2.18-7_amd64.deb ... dpkg: error processing archive /var/cache/apt/archives/libc6_2.18-7_amd64.deb (--unpack): subprocess new pre-installation script was killed by signal (Segmentation fault) Processing triggers for man-db (2.6.7.1-1) ... dpkg: error processing package man-db (--unpack): subprocess installed post-installation script was killed by signal (Segmentation fault) Errors were encountered while processing: /var/cache/apt/archives/libc6_2.18-7_amd64.deb man-db Log ended: 2014-05-31 09:27:14 I don't have any of the legacy nvidia packages installed. My nvidia setup is: ii glx-alternative-nvidia 0.4.1 ii libgl1-nvidia-glx:amd64 331.67-2 ii libgl1-nvidia-glx:i386 331.67-2 ii libgl1-nvidia-glx-i386 331.67-2 ii libnvidia-ml1:amd64 331.67-2 ii nvidia-alternative 331.67-2 ii nvidia-driver 331.67-2 ii nvidia-installer-cleanup 20131102+1 ii nvidia-kernel-common 20131102+1 ii nvidia-kernel-dkms 331.67-2 ii nvidia-modprobe 334.16-1 ii nvidia-settings 331.67-1 ii nvidia-support 20131102+1 ii nvidia-vdpau-driver:amd64 331.67-2 ii nvidia-xconfig 331.67-1 ii xserver-xorg-video-nvidia 331.67-2 Hope that helps...