<email address hidden> Automatic Updates

Can you give the output of:

sudo apt-get update; lsb_release -a

Thanks

Fetched 13.4 MB in 27s (492 kB/s)
Reading package lists... Done
W: GPG error: http://www.duinsoft.nl debs Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E18CE6625CB26B26
No LSB modules are available.

You truncated the outpu. If you run:

cat /etc/lsb-release

What is output please?

Thanks

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"

Hit http://us.archive.ubuntu.com precise-backports/main TranslationIndex
Hit http://us.archive.ubuntu.com precise-backports/multiverse TranslationIndex
Hit http://us.archive.ubuntu.com precise-backports/restricted TranslationIndex
Hit http://us.archive.ubuntu.com precise-backports/universe TranslationIndex
Hit http://us.archive.ubuntu.com precise/main Translation-en
Hit http://us.archive.ubuntu.com precise/multiverse Translation-en
Hit http://us.archive.ubuntu.com precise/restricted Translation-en
Hit http://us.archive.ubuntu.com precise/universe Translation-en
Hit http://us.archive.ubuntu.com precise-updates/main Translation-en
Hit http://us.archive.ubuntu.com precise-updates/multiverse Translation-en
Hit http://us.archive.ubuntu.com precise-updates/restricted Translation-en
Hit http://us.archive.ubuntu.com precise-updates/universe Translation-en
Hit http://us.archive.ubuntu.com precise-security/main Translation-en
Hit http://us.archive.ubuntu.com precise-security/multiverse Translation-en
Hit http://us.archive.ubuntu.com precise-security/restricted Translation-en
Hit http://us.archive.ubuntu.com precise-security/universe Translation-en
Get:53 http://us.archive.ubuntu.com precise-proposed/main Translation-en [85.1 kB]
Hit http://us.archive.ubuntu.com precise-proposed/multiverse Translation-en
Hit http://us.archive.ubuntu.com precise-proposed/restricted Translation-en
Get:54 http://us.archive.ubuntu.com precise-proposed/universe Translation-en [17.5 kB]
Hit http://us.archive.ubuntu.com precise-backports/main Translation-en
Hit http://us.archive.ubuntu.com precise-backports/multiverse Translation-en
Hit http://us.archive.ubuntu.com precise-backports/restricted Translation-en
Hit http://us.archive.ubuntu.com precise-backports/universe Translation-en
Ign http://dl.google.com stable InRelease
Get:55 http://dl.google.com stable Release.gpg [198 B]
Get:56 http://dl.google.com stable Release [1,347 B]
Get:57 http://dl.google.com stable/main i386 Packages [769 B]
Ign http://dl.google.com stable/main TranslationIndex
Ign http://dl.google.com stable/main Translation-en_US
Ign http://dl.google.com stable/main Translation-en
Fetched 13.4 MB in 1min 12s (185 kB/s)
Reading package lists... Done
W: GPG error: http://www.duinsoft.nl debs Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E18CE6625CB26B26
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04 LTS
Release: 12.04
Codename: precise

sudo apt-key adv --recv-key --keyserver keyserver.ubuntu.com E18CE6625CB26B26

when I ran sudo apt-key adv --recv-key --keyserver
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /tmp/tmp.C9Kse3aBBK --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --recv-key --keyserver
gpg: Missing argument for option "--keyserver"

When I pasted the key at ubuntu.com. I got this error "Error handling request

Error handling request. Exception raised: Failure("Error while decoding ascii-armored key: text terminated before reaching PGP public key header line")

My last reply is ONE command. If you copy all the text I gave in one block it will work

Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /tmp/tmp.Tkx7yR3nGe --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --recv-key --keyserver keyserver.ubuntu.com E18CE6625CB26B26
gpg: requesting key 5CB26B26 from hkp server keyserver.ubuntu.com
gpg: key 5CB26B26: "Duinsoft Packages <email address hidden>" not changed
gpg: Total number processed: 1
gpg: unchanged: 1

What does it mean "not changed".

On the update manager I clicked on check and it updated cache and it worked. Thanks for the professional support. That is why I checked to Ubuntu.

If you are behind a corporate firewall, the default port to the key servers can be blocked.

You can now use port 80 instead:
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys E18CE6625CB26B26