This is rather odd: Removing netscape-base-47 ... Purging configuration files for netscape-base-47 ... dpkg - warning: while removing netscape-base-47, directory `/usr/share/doc/netscape-base-47' not empty so not removed. /home/wichert/sources/dpkg-1.6.7/lib/dump.c:160: internal error `unknown verrel' E: Sub-process /usr/bin/dpkg exited unexpectedly