Can't download packages

[Pidron]

Hi guys, I am running Karmic and experience the following problem:
everytime I try to install a new package with Ubuntu Software Centre or Synaptic, the download gets stuck a few seconds after the start, until I get the "unable to fetch..." message. I have tried already to change the server from the Software Source but no joy...
Any idea?
Thanks a zillion!

[zvacet]

System>admin>software sources>check all under ubuntu software (except source) and first two under updates tab.Reload.Try to install packages again.

[xifer]

Hi guys, I am running Karmic and experience the following problem:
everytime I try to install a new package with Ubuntu Software Centre or Synaptic, the download gets stuck a few seconds after the start, until I get the "unable to fetch..." message. I have tried already to change the server from the Software Source but no joy...
Any idea?
Thanks a zillion!

Is this a wireless connection? Can you try to update using a wired connection?

[Pidron]

I tried with zvacet's suggestion but no joy.
I am using a wired connection.
Funny thing is I can surf the web no probs, but when it comes to downloading packages it gets stuck nearly immediately. I have tried selecting different servers but there's no difference. Could it be a problem with my internet provider?

[slakkie]

Could you show us the output of;

aptitude update

[Pidron]

Here it is:
Writing extended state information... Fatto
6% [Connessione a ubuntu.ictvalleumbra.it (1.0.0.0)] [Connessione a archive.canonical.com (1.0.0.0)] [Connessione a pa6% [Connessione a ubuntu.ictvalleumbra.it (1.0.0.0)] [Connessione a archive.canonical.com (1.0.0.0)] [Connessione a packages.medibuntu.org 6% [Connessione a ubuntu.ictvalleumbra.it (1.0.0.0)] [Connessione a archive.canonical.com (1.0.0

Looks as if it gets stuck at 6%. And this happens with any server (might get stuck at 3% for instance).

[slakkie]

Looks like your using some kind of proxy.

[Pidron]

Found out what the problem was: IPV6 was disabled.
I enabled it and now it works fine.:)