Which I didn't do tonight.
Having got home and sat down at my computer, I thought I'd check for updates, although apt-get update didn't take too long to run, there were some 10 packages to be upgraded (43.3MB). Okay, answered Y to apt-get upgrade, and it's still downloading 20 minutes later. It's like flippin' dial-up.
Do you see what I did there? I forgot that today is an Ubuntu release day. Bu99er!