I have a problem with the upgrading.... When i write sudo dpkg --configure -a , this is what happens... : dependency problems prevent configuration of libnih-dbus1: libnih-dbus1 depends on libnih1 (= 1.0.3-4ubuntu9); however: Version of libnih1 on system is 1.0.3-4ubuntu2. libnih-dbus1 depends on libc6 (>= 2.3.4); however: Package libc6 is not installed. dpkg: error processing libnih-dbus1 (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: libnih-dbus1 Please help