What steps will reproduce the problem?
    % > git annex initremote glacier type=glacier encryption=E9053BDA
    -- SNIP --
    initremote glacier [2013-01-10 14:50:12 PST] read: gpg ["--quiet","--trust-model","always","--with-colons","--list-public-keys","E9053BDA"]
    [2013-01-10 14:50:12 PST] chat: gpg ["--quiet","--trust-model","always","--decrypt"]
    
    You need a passphrase to unlock the secret key for
    user: "Andrew Mark Kraut <akraut@gmail.com>"
    4096-bit ELG key, ID 353E49B9, created 2008-11-11 (main key ID E9053BDA)
    
    [2013-01-10 14:50:13 PST] chat: gpg ["--quiet","--trust-model","always","--encrypt","--no-encrypt-to","--no-default-recipient","--recipient","B608B8F6E9053BDA"]
    (encryption updated with gpg key B608B8F6E9053BDA) [2013-01-10 14:50:13 PST] call: glacier ["--region=us-west-1","vault","create","glacier-06D927EC-5761-447B-86AC-CA66040BAC25"]
    [2013-01-10 14:50:13 PST] call: git ["--git-dir=/Users/akraut/Desktop/annex/.git","--work-tree=/Users/akraut/Desktop/annex","config","remote.glacier.annex-glacier","true"]
    [2013-01-10 14:50:13 PST] call: git ["--git-dir=/Users/akraut/Desktop/annex/.git","--work-tree=/Users/akraut/Desktop/annex","config","remote.glacier.annex-uuid","06D927EC-5761-447B-86AC-CA66040BAC25"]
    (gpg) [2013-01-10 14:50:13 PST] chat: gpg ["--quiet","--trust-model","always","--decrypt"]
    
    You need a passphrase to unlock the secret key for
    user: "Andrew Mark Kraut <akraut@gmail.com>"
    4096-bit ELG key, ID 353E49B9, created 2008-11-11 (main key ID E9053BDA)
    
    [2013-01-10 14:50:14 PST] chat: gpg ["--quiet","--trust-model","always","--passphrase-fd","8","--symmetric","--force-mdc"]
    ok

What is the expected output? What do you see instead?

> I expect any transfers to this remote (glacier) to use the given gpg key, but instead it uses --symmetric, as you can see above.

What version of git-annex are you using? On what operating system?

    git-annex version: 3.20130107
    local repository version: 3
    default repository version: 3
    supported repository versions: 3
    upgrade supported from repository versions: 0 1 2


Please provide any additional information below.

> Symmetric encryption is used as described in [[design/encryption]],
> with the symmetric key stored encrypted using your gpg key.
> 
> The extra prompting described in the comments in the bug.
> 
> I've reproduced this with gpg 2.0.19. It is a documented incompatability
> between gpg 1.x and 2.x; the latter needs --batch included in its
> parameters. I've put in a fix. [[done]]