موقع آپدیت یک سری خطا میده. علتش چیه؟
~$ sudo apt-get update
[sudo] password for saeidr:
Hit http://repo.steampowered.com precise InRelease
Ign http://security.ubuntu.com trusty-security InRelease
Get:1 http://security.ubuntu.com trusty-security Release.gpg [933 B]
Hit http://repo.steampowered.com precise/steam Sources
Get:2 http://security.ubuntu.com trusty-security Release [63.5 kB]
Hit http://repo.steampowered.com precise/steam amd64 Packages
Ign http://us.archive.ubuntu.com trusty InRelease
Ign http://ppa.launchpad.net trusty InRelease
Hit http://repo.steampowered.com precise/steam i386 Packages
Ign http://us.archive.ubuntu.com trusty-updates InRelease
Ign http://ppa.launchpad.net trusty Release.gpg
Ign http://us.archive.ubuntu.com trusty-backports InRelease
Ign http://ppa.launchpad.net trusty Release
Hit http://us.archive.ubuntu.com trusty Release.gpg
Get:3 http://us.archive.ubuntu.com trusty-updates Release.gpg [933 B]
Hit http://us.archive.ubuntu.com trusty-backports Release.gpg
Hit http://us.archive.ubuntu.com trusty Release
Get:4 http://us.archive.ubuntu.com trusty-updates Release [63.5 kB]
Get:5 http://security.ubuntu.com trusty-security/main Sources [76.5 kB]
Ign http://repo.steampowered.com precise/steam Translation-en_US
Hit http://us.archive.ubuntu.com trusty-backports Release
Ign http://repo.steampowered.com precise/steam Translation-en
Get:6 http://security.ubuntu.com trusty-security/main Sources [76.5 kB]
Hit http://us.archive.ubuntu.com trusty/main Sources
Hit http://us.archive.ubuntu.com trusty/restricted Sources
Hit http://us.archive.ubuntu.com trusty/universe Sources
Hit http://us.archive.ubuntu.com trusty/multiverse Sources
Hit http://us.archive.ubuntu.com trusty/main amd64 Packages
Get:7 http://security.ubuntu.com trusty-security/restricted Sources [2,061 B]
Hit http://us.archive.ubuntu.com trusty/restricted amd64 Packages
Get:8 http://security.ubuntu.com trusty-security/universe Sources [19.5 kB]
Hit http://us.archive.ubuntu.com trusty/universe amd64 Packages
Hit http://us.archive.ubuntu.com trusty/multiverse amd64 Packages
Get:9 http://security.ubuntu.com trusty-security/multiverse Sources [1,905 B]
Get:10 http://security.ubuntu.com trusty-security/main amd64 Packages [255 kB]
Hit http://us.archive.ubuntu.com trusty/main i386 Packages
Hit http://us.archive.ubuntu.com trusty/restricted i386 Packages
Hit http://us.archive.ubuntu.com trusty/universe i386 Packages
Hit http://us.archive.ubuntu.com trusty/multiverse i386 Packages
Err http://ppa.launchpad.net trusty/main amd64 Packages
404 Not Found
Err http://ppa.launchpad.net trusty/main i386 Packages
404 Not Found
Ign http://ppa.launchpad.net trusty/main Translation-en_US
Ign http://ppa.launchpad.net trusty/main Translation-en
Hit http://us.archive.ubuntu.com trusty/main Translation-en
Hit http://us.archive.ubuntu.com trusty/multiverse Translation-en
Hit http://us.archive.ubuntu.com trusty/restricted Translation-en
Hit http://us.archive.ubuntu.com trusty/universe Translation-en
Get:11 http://us.archive.ubuntu.com trusty-updates/main Sources [190 kB]
Get:12 http://security.ubuntu.com trusty-security/main amd64 Packages [255 kB]
Get:13 http://security.ubuntu.com trusty-security/restricted amd64 Packages [8,875 B]
Get:14 http://security.ubuntu.com trusty-security/universe amd64 Packages [92.0 kB]
Get:15 http://security.ubuntu.com trusty-security/multiverse amd64 Packages [3,459 B]
Get:16 http://security.ubuntu.com trusty-security/main i386 Packages [245 kB]
Get:17 http://us.archive.ubuntu.com trusty-updates/main Sources [190 kB]
Get:18 http://security.ubuntu.com trusty-security/main i386 Packages [245 kB]
Get:19 http://security.ubuntu.com trusty-security/restricted i386 Packages [8,846 B]
Get:20 http://security.ubuntu.com trusty-security/universe i386 Packages [91.9 kB]
Get:21 http://us.archive.ubuntu.com trusty-updates/main Sources [190 kB]
Get:22 http://security.ubuntu.com trusty-security/universe i386 Packages [91.9 kB]
Get:23 http://us.archive.ubuntu.com trusty-updates/restricted Sources [2,564 B]
Get:24 http://security.ubuntu.com trusty-security/universe i386 Packages [91.9 kB]
Get:25 http://security.ubuntu.com trusty-security/multiverse i386 Packages [3,628 B]
Get:26 http://us.archive.ubuntu.com trusty-updates/universe Sources [108 kB]
Get:27 http://security.ubuntu.com trusty-security/main Translation-en [129 kB]
Get:28 http://us.archive.ubuntu.com trusty-updates/multiverse Sources [4,765 B]
Get:29 http://us.archive.ubuntu.com trusty-updates/main amd64 Packages [495 kB]
Get:30 http://security.ubuntu.com trusty-security/main Translation-en [129 kB]
Get:31 http://us.archive.ubuntu.com trusty-updates/restricted amd64 Packages [9,238 B]
Get:32 http://us.archive.ubuntu.com trusty-updates/universe amd64 Packages [263 kB]
Get:33 http://security.ubuntu.com trusty-security/main Translation-en [129 kB]
Hit http://security.ubuntu.com trusty-security/multiverse Translation-en
Hit http://security.ubuntu.com trusty-security/restricted Translation-en
Hit http://security.ubuntu.com trusty-security/universe Translation-en
Get:34 http://us.archive.ubuntu.com trusty-updates/multiverse amd64 Packages [11.7 kB]
Get:35 http://us.archive.ubuntu.com trusty-updates/main i386 Packages [485 kB]
Get:36 http://us.archive.ubuntu.com trusty-updates/main i386 Packages [485 kB]
Get:37 http://us.archive.ubuntu.com trusty-updates/restricted i386 Packages [9,256 B]
Get:38 http://us.archive.ubuntu.com trusty-updates/universe i386 Packages [264 kB]
Get:39 http://us.archive.ubuntu.com trusty-updates/multiverse i386 Packages [11.9 kB]
Hit http://us.archive.ubuntu.com trusty-updates/main Translation-en
Hit http://us.archive.ubuntu.com trusty-updates/multiverse Translation-en
Hit http://us.archive.ubuntu.com trusty-updates/restricted Translation-en
Hit http://us.archive.ubuntu.com trusty-updates/universe Translation-en
Hit http://us.archive.ubuntu.com trusty-backports/main Sources
Hit http://us.archive.ubuntu.com trusty-backports/restricted Sources
Hit http://us.archive.ubuntu.com trusty-backports/universe Sources
Hit http://us.archive.ubuntu.com trusty-backports/multiverse Sources
Hit http://us.archive.ubuntu.com trusty-backports/main amd64 Packages
Hit http://us.archive.ubuntu.com trusty-backports/restricted amd64 Packages
Hit http://us.archive.ubuntu.com trusty-backports/universe amd64 Packages
Hit http://us.archive.ubuntu.com trusty-backports/multiverse amd64 Packages
Hit http://us.archive.ubuntu.com trusty-backports/main i386 Packages
Hit http://us.archive.ubuntu.com trusty-backports/restricted i386 Packages
Hit http://us.archive.ubuntu.com trusty-backports/universe i386 Packages
Hit http://us.archive.ubuntu.com trusty-backports/multiverse i386 Packages
Hit http://us.archive.ubuntu.com trusty-backports/multiverse Translation-en
Hit http://us.archive.ubuntu.com trusty-backports/restricted Translation-en
Hit http://us.archive.ubuntu.com trusty-backports/universe Translation-en
Get:40 http://us.archive.ubuntu.com trusty-updates/main Sources [190 kB]
Hit http://us.archive.ubuntu.com trusty-backports/main Translation-en
Ign http://us.archive.ubuntu.com trusty/main Translation-en_US
Ign http://us.archive.ubuntu.com trusty/multiverse Translation-en_US
Ign http://us.archive.ubuntu.com trusty/restricted Translation-en_US
Ign http://us.archive.ubuntu.com trusty/universe Translation-en_US
Fetched 1,920 kB in 26min 40s (1,199 B/s)
W: Failed to fetch http://ppa.launchpad.net/stk/dev/ubuntu/dists/trusty/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/stk/dev/ubuntu/dists/trusty/main/binary-i386/Packages 404 Not Found
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/trusty-security/main/binary-amd64/Packages Hash Sum mismatch
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/trusty-security/main/binary-i386/Packages Hash Sum mismatch
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/trusty-security/main/i18n/Translation-en Hash Sum mismatch
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/trusty-updates/main/source/Sources Hash Sum mismatch
E: Some index files failed to download. They have been ignored, or old ones used instead.