> W: Duplicate sources.list entry http://ftp.iitm.ac.in etch/main > Packages (/var/lib/apt/lists/ftp.iitm.ac.in_debian_dists_etch_main_binary-i386_Packages) > W: You may want to run apt-get update to correct these problems > root@saisha:/auto/home2/sen# > ........................................ Remove the duplicate entry in your source file. You will see the entry when you open the file. :-)