Upgrading Ubuntu 6.06 (Dapper) to 6.10 (Edgy)

[Sevoma]

What are they for? I have the bottom one so I can apt-get Flash 9, but what is the Pengiun Liberation Front and what is the top one for? If you didn't intend to tell us what they are for, you shouldn't have included them in your instructions.

The PLF repository is for some codecs and stuff. Basically patented and closed source. The top one is owned by Canonical, the business that funds Ubuntu. Some closed source stuff is kept there so Ubuntu avoids legal trouble from having it on their servers.