+# That banner is bogus - no sense to have it _while_ upgrading...
+# It should be some trigger...
+# It makes at least sense that someone will read this file
+# before running bogofilter after upgrade and corrupt his db as
+# it happened before. Bogofilter is not service/daemon by default
+# so its not run automaticaly after upgrade. One can still backup
+# his db.
+%pre
+%banner %{name} -e <<'EOF'
+
+WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+------------------------------------------------------------------------
+POTENTIAL FOR DATA CORRUPTION DURING UPDATES
+
+If you plan to upgrade your database library, if only as a side effect
+of an operating system upgrade, DO HEED the relevant documentation, for
+instance, the %{_docdir}/%{name}-%{version}/README.db file.
+You may need to prepare the upgrade with the old version of the software.
+
+Otherwise, you may cause irrecoverable damage to your databases.
+
+DO backup your databases before making the upgrade.
+------------------------------------------------------------------------
+WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+
+EOF
+