Two times the same user in the /etc/group file

From: Marcel Langevoort <ml_at_pi.net>
Date: Wed, 06 May 1998 18:59:20 +0200

Hello,

In my group file (/etc/groups) some users are mentioned
twice at the same group. How is this possible and how can I
solve this (just remove them from this file??)

Thanks,

Marcel Langevoort
Netherlands
Received on Wed May 06 1998 - 18:59:55 NZST