Comment 2 for bug 675081

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!