Comment 2 for bug 586278

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that there was an error caused by a corrupted archive. Please execute the following commands, as it will clear your package cache, in a terminal ( Applications -> Accessories -> Terminal ) :

sudo apt-get clean
sudo apt-get update

Then try performing the update again. This will likely resolve your issue. If so please set the bug's status to Invalid. Thanks in advance!

It would also be helpful if you could attach /var/log/dpkg.log and /var/log/dpkg.log.1 to this report.