Hi all,

I'm having some problems with my GnuPG-generated key.  I have one
primary DSA for signing (which does not expire), and then every 6 months
I generate a new El-Gamal encryption key (which expires after 6 months).

Now, when I upload my public key to a keyserver it all appears to go OK,
but when someone else then tries to download my key, the sub-key is
missing/doesn't work.

Transmitting the key directly (i.e. via --export and then importing with
--import) works OK - it's only when it goes via a keyserver that the
process falls over.

Does anyone have any idea on what is going wrong, or where I can look for
more information?

Running gpg in --verbose mode doesn't give much more information:

  bris0024(1)% gpg --keyserver=wwwkeys.bri.st.com --verbose --send-keys 
9249F278gpg: WARNING: using insecure memory!
  gpg: please see http://www.gnupg.org/faq.html for more information
  gpg: sending key F13192F2 to hkp server wwwkeys.bri.st.com

  bris0024(2)% gpg --keyserver=wwwkeys.bri.st.com --verbose --search-keys 
[EMAIL PROTECTED]
  gpg: WARNING: using insecure memory!
  gpg: please see http://www.gnupg.org/faq.html for more information
  gpg: searching for "[EMAIL PROTECTED]" from hkp server wwwkeys.bri.st.com
  (1)     David Smith (Home) <[EMAIL PROTECTED]>
          David Smith (STMicroelectronics) <[EMAIL PROTECTED]>
            1024 bit DSA key F13192F2, created: 2002-02-12
  Enter number(s), N)ext, or Q)uit > 1
  gpg: requesting key F13192F2 from hkp server wwwkeys.bri.st.com
  gpg: armor header: Version: PGP Key Server 0.9.6
  gpg: pub  1024D/F13192F2 2002-02-12  David Smith (Home) <[EMAIL PROTECTED]>
  gpg: /home/dsmith/.gnupg/trustdb.gpg: trustdb created
  gpg: using PGP trust model
  gpg: key F13192F2: public key "David Smith (STMicroelectronics) <[EMAIL 
PROTECTED]>" imported
  gpg: 1 keys cached (15 signatures)
  gpg: 0 keys processed (0 validity counts cleared)
  gpg: no ultimately trusted keys found
  gpg: Total number processed: 1
  gpg:               imported: 1

  bris0024(3)% gpg --verbose [EMAIL PROTECTED] --encrypt foo.txt > foo.txt.gpg
  gpg: WARNING: using insecure memory!
  gpg: please see http://www.gnupg.org/faq.html for more information
  gpg: using PGP trust model
  gpg: [EMAIL PROTECTED]: skipped: unusable public key
  gpg: foo.txt: encryption failed: unusable public key

but running --debug-all segfaults (in both cases).

The normal output from gpg --list-keys:
  pub   1024D/F13192F2 2002-02-12
  uid                  David Smith (STMicroelectronics) <[EMAIL PROTECTED]>
  uid                  David Smith (Home) <[EMAIL PROTECTED]>
  sub   1024g/9249F278 2006-06-20 [expires: 2006-12-17]

When it's been through the keyserver:
  pub   1024D/F13192F2 2002-02-12
  uid                  David Smith (STMicroelectronics) <[EMAIL PROTECTED]>
  uid                  David Smith (Home) <[EMAIL PROTECTED]>

I have attached my (public) key in case you wish to try it out.  Please
feel free to experiment uploading it to public keyservers; I have tried with
a number of them, and got the same result.

I am running GnuPG 1.4.3.

Thanks in advance for any help/advice/suggestions you can give.

-- 
David Smith        | Tel: +44 (0)1454 462380    Home: +44 (0)1454 616963
STMicroelectronics | Fax: +44 (0)1454 462305  Mobile: +44 (0)7932 642724
1000 Aztec West    | TINA: 065 2380          GPG Key: 0xF13192F2
Almondsbury        | Work Email: [EMAIL PROTECTED]
BRISTOL, BS32 4SQ  | Home Email: [EMAIL PROTECTED]
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