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The update manager is still stuck in updating the linux kernel (linux-image-2.6.35-24-generic) in the process of updating the grub entries. I think the problem is that the update manager doesn't have root privileges to continue (the app indicator with the key icon disappeared) and I want to know if it's safe to kill the update manager and start the process over.

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It is safe to kill update-manager, but after that please run the following:

sudo dpkg --configure -a
sudo apt-get install -f
sudo apt-get update && sudo apt-get upgrade
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I'm trying to run the first command, but it says: "dpkg: status database area is locked by another process" – Harvey Dec 23 '10 at 16:34
@Harvey A simple restart might help you to get rid of dpkg: status database area is locked by another process If not then execute my commands in your terminal.It will help you. – karthick87 Dec 23 '10 at 16:50
were you able to resolve the problem ? – João Pinto Jan 4 '11 at 22:37

I ran into the same issue, and found a solution that worked for me based on:

Execute the following commands:

ps -e | grep apt

And then:

sudo kill -9 <pid>

For each apt/aptd pid reported.

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