Failed to verify signature for archive for ffmpeg1.1.1_0

[f.calboli@…]

The following installed ports are outdated:
ffmpeg                         1.0.1_1 < 1.1.1_0         
xxxxxx@yyyyyyyy:~$ sudo port -u upgrade outdated 
--->  Computing dependencies for ffmpeg
--->  Fetching archive for ffmpeg
--->  Attempting to fetch ffmpeg-1.1.1_0+gpl2+nonfree.darwin_12.x86_64.tbz2 from http://jog.id.packages.macports.org/macports/packages/ffmpeg
--->  Attempting to fetch ffmpeg-1.1.1_0+gpl2+nonfree.darwin_12.x86_64.tbz2.rmd160 from http://jog.id.packages.macports.org/macports/packages/ffmpeg
Error: org.macports.archivefetch for port ffmpeg returned: Failed to verify signature for archive!
Please see the log file for port ffmpeg for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_multimedia_ffmpeg/ffmpeg/main.log
Error: Unable to upgrade port: 1
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets

Please note I had a similar problem of archive signature with sqlite3.

[ryandesign (Ryan Carsten Schmidt)]

I don't know what to do with "Failed to verify signature for archive" tickets.