I would like to precise that I'am on Backtrack 4 and I post here because the BT4 forum seems frozen.
Here is my problem :
When I try to use the command apt-get or tu use synaptic to download new applications (gedit,texlive,scilab...), I get some error message like :
"W: Failed to fetch http://archive.offensive-security.com/pool/main/g/gtksourceview2/libgtksourceview2.0-common_2.4.1-0ubuntu1_all.deb" ...
At first i thought it has something to do with my configuration to link the shell and synaptic to internet.
But for synaptic my setting is "direct connexion" which is correct.
Moreover I can't ping archive.offensive-security.com in my shell but i can ping other websites whithout problems.
I don't know if the repositories are no more accessible or if it has something to do with my connection (I changed of internet box recntly...).
Some clues would be welcome!