I have just installed Ubuntu 12.04 LTS and while updating (upgrading) I received an error message:
I was searching and trying everything I found here, but the package
linux-image-3.13.0-43-generic can't be installed.
I also tried deleting the package with the description 'Linux kernel image for version 3.13.0 on 32bitX86SMP' but couldn't reinstall it. Reinstalling the OS didn't solve it.
It seems like the problem is, whatever I try this (after typing
E: Could not open lock file /var/cache/apt/archives/lock - open (13: Permission denied) E: Unable to lock the download directory
I just want to get rid of the red warning sign, please help!