I use apt-cacher-ng as a caching proxy for Ubuntu packages. Highly recommend it if you're updating multiple machines.
As other commenters have noted, your particular system's bloat is likely due to a -dbg package (with debugging symbols). It might be time for a fresh OS reinstall to purge the accumulated junk. (A new Linux Mint -- my personal distro of choice -- will probably be about a month after the Ubuntu 12.10 release.)
As other commenters have noted, your particular system's bloat is likely due to a -dbg package (with debugging symbols). It might be time for a fresh OS reinstall to purge the accumulated junk. (A new Linux Mint -- my personal distro of choice -- will probably be about a month after the Ubuntu 12.10 release.)