+[ -d /var/unfold ] || mkdir /var/unfold
+chown -R www-data.www-data /var/unfold
+chmod -R 700 /var/unfold
+# upgrading from older packages -- temporary
+[ -f /usr/share/unfold/myslice.sqlite3 ] && mv -f /usr/share/unfold/myslice.sqlite3 /var/unfold
+rm -f /etc/apache2/sites*/myslice.conf
+# upgrading end