Luis Henriques <henrix@camandro.org> writes:

>>> I forgot to refer the different behaviour between the 2 Gnus versions:
>>>
>>> - Gnus shipped with Emacs:
>>>   I select the email (summary buffer) and I get the question "Decrypt
>>>   (PGP) part? (y or n)".  When I answer 'y', I'm asked for the
>>>   passphrase and get the email decrypted
>>>
>>> - Ma Gnus:
>>>   I get the same question ("Decrypt (PGP) part? (y or n)") and when I
>>>   reply 'y', I get another question: "Decrypt pgp encrypted part? (y
>>>   or n)".  Only after answering 'y' to this question I'm asked for the
>>>   passphrase.
>>
>> Can't reproduce it with either Gnus shipped with Emacs (bzr trunk) nor Ma
>> Gnus (git master).

> I've sent you (privately) an encrypted email.

Thanks, I could reproduce it.  It seems indeed to be caused by the
recent changes to Ma Gnus:

2012-02-16  Lars Ingebrigtsen  <larsi@gnus.org>

        * mm-decode.el (mm-dissect-singlepart): Guess what the type of
        application/octet-stream parts really is.

I'm attaching a patch.  Lars?