I relocated to Australia in January of 2016. The first month or so, I noticed system upgrades with Kali Linux very slow. One of the main factors has to do with location of the default system updates, that being USA-based systems. If you want your Kali Linux upgrades to be faster, you can switch to an Australia-based mirror.
Step 0 – Open the sources.list file
sudo nano /etc/apt/sources.list
Step 1 – Comment all other active lines
Step 2 – Add the following line at the end
deb http://mirror.aarnet.edu.au/pub/kali/kali/ kali-rolling main non-free contrib
All set! Now you’ll notice your apt-get updates, upgrades and dist-upgrades are much faster! (at least if you’re in Australia)
Until next time,