I've had this maybe 5 times as well, I'll need to get back to you about the exact text of the message, but here's what happened last time:
1. Update manager announced that there are updates. 2. I had a quick look at what they are, then hit "Install updates". 3. I entered my password in the gksu dialog that appears. 4. A message is shown saying that it couldn't get '/var/cache/apt/archives/lock', (it might also say there's another other package manager running, but I'm not 100% certain about that). 5. I opened a terminal and ls/ greped for the file, seeing that it belongs to root:root, and has date of approx 5 days ago. 6. I deleted the lock and re-ran update manager. 7. Update manager install some updates (possibly just security updates), then has the same problem (i.e. GOTO 5, except for the date). 8. Updates were installed. 9. Checking for the lock file again after all updates were installed (and update-manager appear to exit ok), the lock was back. ** Changed in: update-manager (Ubuntu) Status: Invalid => New -- update manager lock file not always removed https://bugs.launchpad.net/bugs/124387 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