authorization drives me nuts

[Helmut Jarausch]

Hi,

I'm running CUPS 1.2.11 (on GenToo) and try to set printer options
via the web interface.
There I am asked a user name and a password.

I have entered (as root)
lppasswd -g wheel -a cups
plus a password (twice)

Then, after a restart of CUPS,
I tried this user name with password entered above
but it's not accepted.

(I've checked that I am a member of group 'wheel')

Furthermore I'm working at the machine where  cupsd is running.

What am I missing. I haven't found anything in the FAQ.

Many thanks for a hint,
Helmut.