Thanks. Your sources.list has errors in it. There is no such component 'web', so I have removed this and attached a corrected sources.list
** Attachment added: "sources.list" http://launchpadlibrarian.net/18143616/sources.list ** Changed in: synaptic (Ubuntu) Status: Incomplete => Invalid -- upgrade failure https://bugs.launchpad.net/bugs/233997 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs