Bug on my source list prenvet use my sinaptyc, update, and ubuntu sofware center

I reinstall Ubuntu 11.04,and when try to reinstall the BURG,I cant, same when I Try to run the software center ,and install AWN, and same when I Try to update my system.I got the same error :An unresolvable problem occurred while initializing the package information.

Please report this bug against the 'update-manager' package and include the following error message:

'E:Malformed line 2 in source list /etc/apt/sources.list (dist parse)'

Any idea how to resolve this,Thanks .

Sources list error

You have an error in your sources list.

To open your sources list open a Terminal and issue the command: gksudo gedit /etc/apt/sources.list

What does line 2 (or the first few lines) say?

Copy and paste the answer here.

source list error

Thanks alanrochester for tray .But I can not paste line 2 of my source list. What I did, is a back up of my data, and reinstall the whole thing, I got not more trouble now

...Pity...

It's a pity that you did so much work. It only involved correcting one line of text.

List source bug

It is true,estimated alanrochester,but I tried on terminal acces to the list source and was unsuccessful.

Anyway,I say Thanks.