like 3 hours ago when i type sudo apt-get update
my repositories update just fine, but now i get these messages :
Err http://ppa.launchpad.net natty InRelease
Err http://ppa.launchpad.net natty InRelease
Err http://ppa.launchpad.net natty InRelease
Err http://ppa.launchpad.net natty InRelease
Err http://ppa.launchpad.net natty InRelease
Err http://ppa.launchpad.net natty InRelease
Err http://ppa.launchpad.net natty InRelease
Err http://ppa.launchpad.net natty InRelease
Err http://ppa.launchpad.net natty InRelease
Err http://ppa.launchpad.net natty InRelease
Err http://ppa.launchpad.net natty InRelease
Err http://ppa.launchpad.net natty InRelease
Err http://ppa.launchpad.net natty Release.gpg
Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net natty Release.gpg
Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net natty Release.gpg
Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net natty Release.gpg
Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net natty Release.gpg
Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net natty Release.gpg
Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net natty Release.gpg
Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net natty Release.gpg
Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net natty Release.gpg
Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net natty Release.gpg
Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net natty Release.gpg
Unable to connect to ppa.launchpad.net:http:
Err http://ppa.launchpad.net natty Release.gpg
Unable to connect to ppa.launchpad.net:http:
Reading package lists... Done
W: Failed to fetch http://ppa.launchpad.net/adilson/experimental/ubuntu/dists/natty /InRelease
W: Failed to fetch http://ppa.launchpad.net/alexeftimie/ppa/ubuntu/dists/natty/InRelease
W: Failed to fetch http://ppa.launchpad.net/am-monkeyd/nautilus-elementary-ppa/ubuntu/dists/natty/InRelease
W: Failed to fetch http://ppa.launchpad.net/chromium-daily/dev/ubuntu/dists/natty/InRelease
W: Failed to fetch http://ppa.launchpad.net/elementaryart/elementarydesktop/ubuntu/dists/natty/InRelease
W: Failed to fetch http://ppa.launchpad.net/ferramroberto/java/ubuntu/dists/natty/InRelease
W: Failed to fetch http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu/dists/natty/InRelease
W: Failed to fetch http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu/dists/natty/InRelease
W: Failed to fetch http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu/dists/natty/InRelease
W: Failed to fetch http://ppa.launchpad.net/tiheum/equinox/ubuntu/dists/natty/InRelease
W: Failed to fetch http://ppa.launchpad.net/tualatrix/ppa/ubuntu/dists/natty/InRelease
W: Failed to fetch http://ppa.launchpad.net/zeitgeist/ppa/ubuntu/dists/natty/InRelease
W: Failed to fetch http://ppa.launchpad.net/adilson/experimental/ubuntu/dists/natty/Release.gpg Unable to connect to ppa.launchpad.net:http:
W: Failed to fetch http://ppa.launchpad.net/alexeftimie/ppa/ubuntu/dists/natty/Release.gpg Unable to connect to ppa.launchpad.net:http:
W: Failed to fetch http://ppa.launchpad.net/am-monkeyd/nautilus-elementary-ppa/ubuntu/dists/natty/Release.gpg Unable to connect to ppa.launchpad.net:http:
W: Failed to fetch http://ppa.launchpad.net/chromium-daily/dev/ubuntu/dists/natty/Release.gpg Unable to connect to ppa.launchpad.net:http:
W: Failed to fetch http://ppa.launchpad.net/elementaryart/elementarydesktop/ubuntu/dists/natty/Release.gpg Unable to connect to ppa.launchpad.net:http:
W: Failed to fetch http://ppa.launchpad.net/ferramroberto/java/ubuntu/dists/natty/Release.gpg Unable to connect to ppa.launchpad.net:http:
W: Failed to fetch http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu/dists/natty /Release.gpg Unable to connect to ppa.launchpad.net:http:
W: Failed to fetch http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu/dists/natty/Release.gpg Unable to connect to ppa.launchpad.net:http:
W: Failed to fetch http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu/dists/natty/Release.gpg Unable to connect to ppa.launchpad.net:http:
W: Failed to fetch http://ppa.launchpad.net/tiheum/equinox/ubuntu/dists/natty/Release.gpg Unable to connect to ppa.launchpad.net:http:
W: Failed to fetch http://ppa.launchpad.net/tualatrix/ppa/ubuntu/dists/natty/Release.gpg Unable to connect to ppa.launchpad.net:http:
W: Failed to fetch http://ppa.launchpad.net/zeitgeist/ppa/ubuntu/dists/natty/Release.gpg Unable to connect to ppa.launchpad.net:http:
W: Some index files failed to download. They have been ignored, or old ones used instead.