Comment 17 for bug 884856

Echoing the last entry, this is (also) an Ubuntu bug. The /etc/xdg/autostart/gnome-keyring-gpg.desktop should not be installed until gnome-keyring is a reasonable feature-complete replacement for the GnuPG agent, which it is not at the moment. Please consider removing that file until the upstream gnome-keyring bugs regarding GnuPG agent support are fixed. Removing that file for me fixed my problems with GnuPG.