Comment 13 for bug 519948

duplicity -V
 duplicity 0.6.20

duplicity remove-older-than 1M --force ftp://ixxx@yyyy/usr

But many old signature from 2011 are still on the backup-Store

NcFTP 3.2.3 (Jul 28, 2009) by Mike Gleason (http://www.NcFTP.com/contact/).
Connecting to ...
FTP server ready.
Logging in...

Login successful.
Logged in to .
Current remote directory is /usr.
ncftp /usr > ll duplicity-full-signatures.201105
    20110506T051048Z.sigtar.gpg 20110521T052258Z.sigtar.gpg
    20110513T051832Z.sigtar.gpg 20110529T052206Z.sigtar.gpg
ncftp /usr > ll duplicity-full-signatures.20110*
-rw------- 1 85285 2000 34183227 Apr 28 2011 duplicity-full-signatures.20110428T065520Z.sigtar.gpg
-rw------- 1 85285 2000 35780951 May 6 2011 duplicity-full-signatures.20110506T051048Z.sigtar.gpg
-rw------- 1 85285 2000 36017596 May 13 2011 duplicity-full-signatures.20110513T051832Z.sigtar.gpg
-rw------- 1 85285 2000 36017612 May 21 2011 duplicity-full-signatures.20110521T052258Z.sigtar.gpg
-rw------- 1 85285 2000 36318629 May 29 2011 duplicity-full-signatures.20110529T052206Z.sigtar.gpg
-rw------- 1 85285 2000 36318696 Jun 6 2011 duplicity-full-signatures.20110606T051741Z.sigtar.gpg
-rw------- 1 85285 2000 36318442 Jun 13 2011 duplicity-full-signatures.20110613T051930Z.sigtar.gpg
-rw------- 1 85285 2000 36318437 Jun 21 2011 duplicity-full-signatures.20110621T051846Z.sigtar.gpg
-rw------- 1 85285 2000 36319150 Jun 28 2011 duplicity-full-signatures.20110628T052016Z.sigtar.gpg
-rw------- 1 85285 2000 36319231 Jul 6 2011 duplicity-full-signatures.20110706T052756Z.sigtar.gpg
.....

duplicity 0.6.20 remove does not remove old signatures