z3u4r5dok@ubuntu:~$ sudo apt-get update
Hit:1 http://us.archive.ubuntu.com/ubuntu xenial InRelease
Get:2 http://us.archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Hit:3 http://archive.canonical.com/ubuntu xenial InRelease
Get:4 http://us.archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Hit:5 http://ppa.launchpad.net/gwendal-lebihan-dev/hexchat-stable/ubuntu xenial InRelease
Hit:6 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:7 http://us.archive.ubuntu.com/ubuntu xenial-proposed InRelease [253 kB]
Ign:8 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial InRelease
Ign:9 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial Release
Ign:10 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main amd64 Packages
Ign:11 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main i386 Packages
Ign:12 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main all Packages
Ign:13 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main Translation-en_US
Ign:14 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main Translation-en
Ign:15 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:16 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main DEP-11 64x64 Icons
Ign:10 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main amd64 Packages
Ign:11 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main i386 Packages
Ign:12 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main all Packages
Ign:13 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main Translation-en_US
Ign:14 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main Translation-en
Ign:15 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:16 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main DEP-11 64x64 Icons
Get:17 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Ign:10 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main amd64 Packages
Ign:11 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main i386 Packages
Ign:12 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main all Packages
Ign:13 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main Translation-en_US
Ign:14 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main Translation-en
Ign:15 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:16 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main DEP-11 64x64 Icons
Ign:10 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main amd64 Packages
Ign:11 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main i386 Packages
Ign:12 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main all Packages
Ign:13 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main Translation-en_US
Ign:14 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main Translation-en
Ign:15 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:16 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main DEP-11 64x64 Icons
Ign:10 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main amd64 Packages
Ign:11 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main i386 Packages
Ign:12 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main all Packages
Ign:13 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main Translation-en_US
Ign:14 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main Translation-en
Ign:15 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:16 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main DEP-11 64x64 Icons
Err:10 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main amd64 Packages
  404  Not Found
Ign:11 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main i386 Packages
Ign:12 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main all Packages
Ign:13 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main Translation-en_US
Ign:14 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main Translation-en
Ign:15 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:16 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial/main DEP-11 64x64 Icons
Fetched 560 kB in 8s (66.7 kB/s)
Reading package lists... Done
W: The repository 'http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://ppa.launchpad.net/mc3man/trusty-media/ubuntu/dists/xenial/main/binary-amd64/Packages  404  Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
z3u4r5dok@ubuntu:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
  libllvm4.0 linux-headers-4.4.0-112 linux-headers-4.4.0-112-generic
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.