i am a new user and have no idea how to use terminal, please help , sorry i am so late in asking for more help. i did run your message in terminal and now i can upgrade my system but don't know what i did to fix problem. for a dummy like me is there a self taught system ?
-- can not run upgrade'W:Duplicate sources. https://bugs.launchpad.net/bugs/121189 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs