Error when check for update!

[lovevn]

Recently, I have found that my Software Update is in problem. I show this:
240164
Then I try to click "check" button and then it shows:
240163
When I open terminal to type:

sudo apt-get update
result has some error:

Err http://ppa.launchpad.net precise/main Sources
404 Not Found
Err http://ppa.launchpad.net precise/main i386 Packages
404 Not Found


and finally:

W: Failed to fetch http://ppa.launchpad.net/norsetto/ppa/ubuntu/dists/precise/main/source/Sources 404 Not Found

W: Failed to fetch http://ppa.launchpad.net/norsetto/ppa/ubuntu/dists/precise/main/binary-i386/Packages 404 Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.


How can I do to solve this problem? help me, thanks!

[schragge]

I guess you solved your problem on yourself as the thread is already marked [SOLVED]. If not, here is how:

sudo add-apt-repository -r ppa:norsetto/ppa There's no packages for precise in that PPA, so it should be removed.

[lovevn]

I guess you solved your problem on yourself as the thread is already marked [SOLVED]. If not, here is how:

sudo add-apt-repository -r ppa:norsetto/ppa There's no packages for precise in that PPA, so it should be removed.
Yeah, thank you so much! Sorry, I have a confusion when I choose title :">