I have a lot of entries in my etc/apt/sources.list, and even though I haven't a clue about more than half of them, some being commented out previously by who knows who, and others, like security update lines, have been added, and then found to be faulty, so then commented out...

My issues: Is it common to be commenting out entries in the /etc/apt/sources.list? I realize that sites go up and down, and crash, and are changed to other locations, and all that, but, how do you keep track of all this...

I did a apt-get update - and got a whole screen-full of warnings, and errors in the listings...

Specifically:
ftp://ftp.gwdg.de (134.76.11.100) connection timed out...
http://people.debian.org ./sources -=- 403 forbidden
./packages and sid/i386 packages with 404 not found
http://non-us.debian.org ./sources and ./packages with 404 not found
and lastly, which I figured was an easy better comment this out...
http://www.videolan.org sources/ sources and i386/ packages with 301 moved permanently

I realize that the file /etc/apt/sources.list is the MAIN update/upgrade file for locating needed, and wanted programs, and that the file is sooooo easily updated with any editor, that can make it even easier to mess it all up. Either by accident, or by adding/commenting out entries in a kind of nilly-willy manor.

Looking over the above entries, finding all of them, except for the non-us.debian.org entry, I manually began to comment them out, with information on why and when they were commented out, then thought... Maybe, before I possibly muck things up with a update or upgrade, I might want to check beforehand....

Anyone got ideas on this subject?
Thanks to everyone,
Cuddles