kmail and gnupg problems (gpg-agent)

[Zé]

At this moment i am using kmail-1.7 and i when i try to sign a message 
digitally appears this dialong:

This dialog will reappear every time the passphrase is needed. For a more 
secure solution that also allows caching the passphrase, install gpg-agent. 
gpg-agent of gnupg-1.9, wich you can download from 
http://www.gnupg.org/download

But i have gnupg-1.9 in my sistem and gpg-agent is running in the background.

Other thing wierd is than kgpg is started always appear a dialog saying that 
the use og GnuPG Agent is active by default in the config file, but says that 
the agent appears not to be running wich is complectly false, gpg-agent is 
running.
So why constantly appears this message when i run Kgpg, and why isnt possible 
to cache the passphrase, always needed to enter it when sending a message 
digitally signed in Kmail-1.7?

Any help?

greetings,
Zé
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