Importing pgp5 key / trustdb

[Markus Gruber]

Hi,
I exported my pgp5 public key and imported it on the gpg keyring:

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markus at poro:/opt/home/markus > pgpk -x Markus -o file
Received signal 11.
markus at poro:/opt/home/markus > gpg --import file
gpg (GnuPG) 0.4.2 ...

gpg:file: key F82D38E0: public key imported
markus at poro:/opt/home/markus >
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I signed the fresh imported key:

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markus at poro:/opt/home/markus > gpg --edit-key 0xF82D38E0
gpg (GnuPG) 0.4.2 ...

pub  1024D/F82D38E0  created: 1998-05-01 expires: never      trust: -/q
sub  2048g/CC7B21D5  created: 1998-05-01 expires: never     
(1)  Markus Gruber <gruber at eikon.tum.de>
(2)  Markus Gruber <Markus.Gruber at ilo.baynet.de>

Command> sign
Really sign all user ids? y
                           
pub  1024D/F82D38E0  created: 1998-05-01 expires: never      trust: -/q
             Fingerprint: 08B1 44CF 35A1 F546 25CE  2C3C F72B 19EA F82D 38E0

     Markus Gruber <gruber at eikon.tum.de>
     Markus Gruber <Markus.Gruber at ilo.baynet.de>

Are you really sure that you want to sign this key
with your key: "Markus Gruber (DSA/ELG) <markus.gruber at ilo.baynet.de>"

Really sign? y
              
You need a passphrase to unlock the secret key for
user: "Markus Gruber (DSA/ELG) <markus.gruber at ilo.baynet.de>"
(1024-bit DSA key, ID DE5E7FB2, created 1998-08-18)

                   
Command> q
Save changes? y
markus at poro:/opt/home/markus >
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I used it to sign/encrypt something.
All worked (specifiing the primary key-id, too, nice), but the key is not 
trusted:

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markus at poro:/opt/home/markus > echo "Heino" | gpg -eas -r 0xF82D38E0 -o file
gpg (GnuPG) 0.4.2 ...

You need a passphrase to unlock the secret key for
user: "Markus Gruber (DSA/ELG) <markus.gruber at ilo.baynet.de>"
(1024-bit DSA key, ID DE5E7FB2, created 1998-08-18)

gpg: using secondary key CC7B21D5 instead of primary key F82D38E0
Could not find a valid trust path to the key.  Let's see whether we
can assign some missing owner trust values.

No owner trust values changed.

It is NOT certain that the key belongs to its owner.
If you *really* know what you are doing, you may answer
the next question with yes

Use this key anyway? y
File 'file' exists. Overwrite (y/N)? y
markus at poro:/opt/home/markus >
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I tried
gpgm --update-trustdb
gpgm --check-trustdb
but no luck.

Unless I´m mistaken, the key should be trusted when I sign it.
How can I get it work. Have I forgotten something?

:-) Thanks

Markus

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