@Neil: It seems that the file you attached is not the most recent one. The log files from the last execution are in /var/log/dist-upgrade. The files in the subdirectory /var/log/dist-upgrade/20110405-2234/ are those from the previous attempt on March 21. Please attach main.log and apt.log from /var/log/dist-upgrade
I hope you have made sure that your lucid packages are up-to-date ("sudo apt-get update; sudo apt-get upgrade", try also "sudo apt-get dist- upgrade"). Some people have reported that skype has caused such error messages, try "sudo apt-get remove --purge skype". (You can reinstall skype later.) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/658458 Title: do-release-upgrade report error on upgrading from ubuntu 10.04 to 10.10 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs