Author: Alexander Zangerl <az@debian.org>
Subject: fix #659009 by disabling validate_encryption_settings, which cannot work with public key encryption

--- a/duplicity/dup_main.py
+++ b/duplicity/dup_main.py
@@ -371,7 +371,9 @@ def write_multivol(backup_type, tarblock
         mf = globals.restart.last_backup.get_local_manifest()
         globals.restart.checkManifest(mf)
         globals.restart.setLastSaved(mf)
-        validate_encryption_settings(globals.restart.last_backup, mf)
+        # az [2012-03-11 Sun 12:11]
+        # this conflicts with public key encryption
+        ## validate_encryption_settings(globals.restart.last_backup, mf)
         mf.fh = man_outfp
         last_block = globals.restart.last_block
         log.Notice(_(u"Restarting after volume %s, file %s, block %s") %
