This question maybe explain a bit more what's going on: http://askubuntu.com/questions/127213/files-e-mail-not-signed-with-kleopatra-kmail-gpg-agent. In simple words, Kleopatra and KMail can't sign messages, files, archives. This happens, looks like, the pinentry (gtk2 and qt4) isn't working very well. I have read some bugs about this before (reported here too) and try to solve the problem, but I hadn't sucess. I tried create gpg-agent.sh, change gpg.conf, install pinentry-gtk2 and several other things. Appreciate the helps, thx.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: kleopatra 4:4.8.2-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Sun Apr 29 08:57:39 2012
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/kleopatra
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120423)
ProcEnviron:
LANGUAGE=pt_BR
LANG=pt_BR.UTF-8
SHELL=/bin/bash
SourcePackage: kdepim
UpgradeStatus: No upgrade log present (probably fresh install)
I had solved the problem. My solution (not certain what all of I did) is here http://