I ran "do-release-upgrade -d" on an Ubuntu 10.10 (Maverick) box, but the command failed while trying to download natty.tar.gz, which would be Ubuntu 11.04: Checking for a new ubuntu release Err Upgrade tool signature 404 Not Found [IP: 91.189.91.14 80] Err Upgrade tool 404 Not Found [IP: 91.189.91.14 80] Fetched 0B in 0s (0B/s) WARNING:root:file 'natty.tar.gz.gpg' missing Failed to fetch Fetching the upgrade failed. There may be a network problem. There is no network problem, at least not on my end. So what do you think I can do about that? It's not that big of a deal to just start from scratch, but this is annoying. I don't know where it is getting that IP, but it seems to be the wrong IP. Is there another way to do the upgrade? If I have a new ISO, can I just use that to upgrade to the latest version? TIA, Mike