[lubuntu] Failed upgrade from Lubuntu 13.04 to 13.10

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http://ubuntuforums.org – Hello, Today, I have a small, old laptop that I plan to use for testing lubuntu. It's on 13.04 and runs really well, but I wanted to install the daily build straight from upgrading, not another fresh install. I tried Code: $ update-manager -d , but it failed. I also tried the commands. Code: john@jkimtux:~$ sudo sed -i 's/raring/saucy/g' /etc/apt/sources.list john@jkimtux:~$ sudo apt-get update && sudo apt-get dist-upgrade Get:1 http://linux.dropbox.com precise Release.gpg [489 B] Get:2 http://linux.dropbox.com precise Release [2,603 B]        & (Hardware)