Bug#208428: another workaround

[Vaclav Smilauer <smilauer@volny.cz>]

> Contrary to what has been said
> here, it doesn't help to remove the "compat" keyword from the
> /etc/nsswitch.conf file, the problem remains. But it definitely appears 
> if some lines in /etc/group are unusually long. After removing these lines
> from /etc/group the problem doesn't appear (and the adduser script works
> fine).

Hmmm, it worked for me also only somewhere. Another workaroud is to say in /etc/group

users:x:1000:a,very,long,list,of
users:x:1000:all,users,on,your
users:x:1000:system

(www-gnats.gnu.org is currently not working, so I could not verify if this bug is already known to gnu folks)