Try to delete these files from filebox. /var/cache/apt/pkgcache.bin /var/cache/apt/srcpkgcache or in x-terminal sudogainroot rm /var/cache/apt/pkgcache.bin rm /var/cache/apt/srcpkgcache
then apt-get autoremove apt-get autoclean apt-get clean apt-get install -f apt-get update -f apt-get update