Hi, Aurelian Jarno wrote: > * libc.preinst: detect broken LD_LIBRARY_PATH. Closes: #630608. For what it's worth, this patch would not have helped in the motivating example. The problematic LD_LIBRARY_PATH was set in /etc/profile and the upgrade was not affected by it for some reason. Perhaps sudo cleaned the environment, or perhaps the upgrade was taking place in a non-login shell (e.g., over ssh).