Package: libc6 Version: 2.5-4 Severity: important The ldconfig command does not look for configuration files in /etc/ld.so.conf.d/* . This means that /etc/ld.so.conf.d/libc6-xen.conf is ignored on Xen systems. Ignoring this config file means that the shared objects from the libc6-xen package are never used. The result of this is a lack of system performance and large numbers of messages logged via printk.