>>>>> In <873bgvcaew.fsf@pacem.orebokech.com> 
>>>>>	Romain Francoise <romain@orebokech.com> wrote:
> However, there are still issues with the asynchronous interface; for
> example if one moves with N and P through a group where all articles are
> signed faster than GnuPG can check the signatures, sometimes this error
> is signalled:

> | error in process filter: sit-for: Selecting deleted buffer
> | error in process filter: Selecting deleted buffer

I hope this patch will help you.