Try »apt-get update« in order to correct this problem

[nicrnicr]

Hi everybody :-)

As I wanted to install bitcoin-qt, I first wrote

sudo apt-add-repository ppa:bitcoin/bitcoin

then

sudo apt-get update

This last code provoked

.
.
.
OK   http://de.archive.ubuntu.com precise-backports/main Translation-en
OK   http://de.archive.ubuntu.com precise-backports/multiverse Translation-en
OK   http://de.archive.ubuntu.com precise-backports/restricted Translation-en
OK   http://de.archive.ubuntu.com precise-backports/universe Translation-en
Es wurden 1.189 kB in 31 s geholt (38,2 kB/s)
Paketlisten werden gelesen... Fertig
W: Duplicate sources.list entry http://www.bchemnet.com/suldr/ debian/extra amd64 Packages (/var/lib/apt/lists/www.bchemnet.com_suldr_dists_debian_extra_binary-amd64_Packages)
W: Duplicate sources.list entry http://www.bchemnet.com/suldr/ debian/extra i386 Packages (/var/lib/apt/lists/www.bchemnet.com_suldr_dists_debian_extra_binary-i386_Packages)
W: Probieren Sie »apt-get update«, um diese Probleme zu korrigieren

The last line means "Try »apt-get update« in order to correct this problem".

Please, could someone help me? :-)

[claydoh]

Note this is only a warning, and not an error, so outside of the messages, everything should run fine.

The warning is telling you exactly what the problem is - you have duplicate entries in your sources.list. You will need to remove the extra entries to get rid of the warning.

You can do this from within Muon - Edit Software Sources.

[nicrnicr]

Thank you very much claydoh ! :-)

But when I open Muon and I select Edit Software Sources, a window with 5 tabs opens:
- Software of Kubuntu
- Other software
- Update
- Autentification
- Statistics
Please, could you write me precisely how I can get rid of the duplicate entries?

[kc1di]

it would be under the other software tab. Click on that and scroll down until you find the http://www.bchemnet.com/suldr/ debian/extra entry and remove one of the or uncheck the box in front of it.
Good luck.

[nicrnicr]

Thank you very much kcidi!

[kc1di]

Your Welcome