hey guys im new to kali, i installed it about two weeks ago,
i had changed sources.list from
deb http://http.kali.org/kali kali-rolling main contrib non-free
deb-src http://http.kali.org/kali kali-rolling main contrib non-free

to
deb http://archive-3.kali.org/kali kali-rolling main contrib non-free
deb-src http://archive-3.kali.org/kali kali-rolling main contrib non-free.

everything was working fine until 2nd feb when my key expired, my updates are slow, i updated the key but its very slow,
i changed the sources.list back to
deb http://http.kali.org/kali kali-rolling main contrib non-free
deb-src http://http.kali.org/kali kali-rolling main contrib non-free

the download speed is in bytes per second, rarely it reaches 25 kbps,

any fix for the same.

i have installed from the 2017.2 amd official download .

gpg --keyserver hkp://keys.gnupg.net --recv-key 7D8D0BF6
after key update i got this:

gpg: key ED444FF07D8D0BF6: 130 signatures not checked due to missing keys
gpg: key ED444FF07D8D0BF6: "Kali Linux Repository <[email protected]>" not changed
gpg: Total number processed: 1
gpg: unchanged: 1

please help me out