After the last cvsup and portupgrade,
sylpheed-claws was now known as claws-mail.
Now gpg didn't work anymore. Some googling mentioned that the program
tries to use gpg-agent. So I changed my configuration
accordingly and installed pinentry-qt, a graphical
passphrase dialog utility.
This is my gpg-agent.conf. It belongs in your local
.gnupg/-directory:
pinentry-program /usr/local/bin/pinentry-qt default-cache-ttl 3600
You also have to add use-agent to your local
gpg.conf (probably in .gnupg/, too).
To start the gpg-agent, add eval `gpg-agent --daemon` to
your .login-file or wherever you need. By now your
gpg-support should be functional (again).