Hit http://security.ubuntu.com dapper-security/main Packages
Hit http://security.ubuntu.com dapper-security/restricted Packages
Hit http://security.ubuntu.com dapper-security/main Sources
Hit http://security.ubuntu.com dapper-security/restricted Sources
Hit http://security.ubuntu.com dapper-security/universe Packages
Hit http://security.ubuntu.com dapper-security/universe Sources
Hit http://ro.archive.ubuntu.com dapper-backports/main Sources
Hit http://ro.archive.ubuntu.com dapper-backports/restricted Sources
Hit http://ro.archive.ubuntu.com dapper-backports/universe Sources
Hit http://ro.archive.ubuntu.com dapper-backports/multiverse Sources
Fetched 121kB in 1s (113kB/s)
Reading package lists... Done
W: GPG error: http://ro.archive.ubuntu.com dapper Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5
W: GPG error: http://ro.archive.ubuntu.com dapper-updates Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5
W: GPG error: http://ro.archive.ubuntu.com dapper-backports Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5
W: GPG error: http://security.ubuntu.com dapper-security Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5
W: You may want to run apt-get update to correct these problems


cat /etc/apt/sources.list

deb http://ro.archive.ubuntu.com/ubuntu/ dapper main restricted
deb-src http://ro.archive.ubuntu.com/ubuntu/ dapper main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://ro.archive.ubuntu.com/ubuntu/ dapper-updates main restricted
deb-src http://ro.archive.ubuntu.com/ubuntu/ dapper-updates main restricted

## Uncomment the following two lines to add software from the 'universe'
## repository.
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## universe WILL NOT receive any review or updates from the Ubuntu security
## team.
deb http://ro.archive.ubuntu.com/ubuntu/ dapper universe
deb-src http://ro.archive.ubuntu.com/ubuntu/ dapper universe

## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://ro.archive.ubuntu.com/ubuntu/ dapper-backports main restricted universe multiverse
deb-src http://ro.archive.ubuntu.com/ubuntu/ dapper-backports main restricted universe multiverse

deb http://security.ubuntu.com/ubuntu dapper-security main restricted
deb-src http://security.ubuntu.com/ubuntu dapper-security main restricted
deb http://security.ubuntu.com/ubuntu dapper-security universe
deb-src http://security.ubuntu.com/ubuntu dapper-security universe