gpg -- duplicated key -- how to get rid of it?

[Lukas Ruf <ruf@rawip.org>]

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Dear all,

when I switched from my pgp 2.x installation a couple of years ago,
obviously I made a mistake, at least I do not know what I made
wrong...

However, I get the following message all the time I refresh-keys:

uccellina:~/Conf!80> gpg --refresh-keys ruf@tik.ee.ethz
gpg: refreshing 1 key from wwwkeys.ch.pgp.net
gpg: key D20BA2ED: duplicated user ID detected - merged
gpg: key D20BA2ED: "Lukas Ruf (PGP 2.x) <ruf@tik.ee.ethz.ch>" not changed
gpg: Total number processed: 1
gpg:              unchanged: 1

I fiddled around with 'edit-key' -- but could not manage to get rid of
the duplicated user ID.

So, my question: does anyone know
a) what I did the wrong way?
b) what I need to do to get rid of this error?

Thanks for any enlightenment!

wbr,
Lukas
- -- 
Lukas Ruf           | Wanna know anything about raw |
<http://www.lpr.ch> | IP? -> <http://www.rawip.org> |
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