Comment 2 for bug 807116

"Thank you for taking the time to report this bug and helping to make
Ubuntu better. It seems that there was an error on your system when
trying to install a particular package. Please execute the following
command, as it will clear your package cache, in a terminal:

sudo apt-get clean

Then try performing the update again. This will likely resolve your
issue, but the failure can be caused by filesystem or memory corruption.
So please also run a fsck on your filesystem(s) and a memory test. If
this does resolve your bug please set its status to Invalid. Thanks and
good luck!"

Thanks!