Thanks for being so nice. I did try clonezilla right at the start when I were reading a lot of the wiki & forum. As I now know the reason it didn't work for me is because my laptop has an internel emmc drive that clonezilla doesn't know what to do with.
I keep my stuff on a giant usb stick anyway so I didn't really regard backing up the os as that important. I'll figure something out though 
Worst case I can revert to my favourite sport of reinstalling if I can't fix it lol
No more doubts. thanks
@MattAV in my case it's just e without CTRL, but removing quiet and splash entries to deactivate plymouth temporarily is what you will have to do additionally to what I wrote, yes.
F10 or CTRL+x should both work to launch the boot process after you edit the boot parameters.
sudo pacman-mirros -f 5
Generates list of 5 most recently updated mirrors sorted by response time. They are not fastest 5 up to date mirrors. Pls observe the last sync time below marked in bold and generated mirrorlist.
[mickey@manjaro ~]$ sudo pacman-mirrors -f 5
[sudo] password for mickey:
.: Info Downloading mirrors from repo.manjaro.org
.: Info: Querying mirrors - This may take some time
1.563 United_States : 00:13: http://distro.ibiblio.org/manjaro/
1.899 Germany : 00:01: https://mirror.netzspielplatz.de/manjaro/packages/
..... Bulgaria : 00:10: https://manjaro.ipacct.com/manjaro/
1.464 Australia : 00:10: http://manjaro.uberglobalmirror.com/
1.378 Poland : 00:02: http://mirror.chmuri.net/manjaro/
1.397 Japan : 00:12: http://ftp.tsukuba.wide.ad.jp/Linux/manjaro/
.: Info Writing mirror list
Poland : http://mirror.chmuri.net/manjaro/stable
Japan : http://ftp.tsukuba.wide.ad.jp/Linux/manjaro/stable
Australia : http://manjaro.uberglobalmirror.com/stable
United_States : http://distro.ibiblio.org/manjaro/stable
Germany : https://mirror.netzspielplatz.de/manjaro/packages/stable
.: Info Mirrorlist generated and saved to: /etc/pacman.d/mirrorlist
xps9550, KDE, smooth update. no issues at all. kernel 4.4.67-1
Smoth update on KDE, thanks 
Thanks for the suggestion. I did wait 24h to be sure, and I confirm than downgrading networkmanager from 1.8 to the last 1.6 version was the solution for me.
I have now again a stable internet connexion without loosing the network every 2 hours or so.
I have marked the current 1.8 version as "ignore package" for further upgrades... will try with new versions when one will arrive, but for now I am OK.
I am getting errors like this
error: ncurses: signature from "Lukas Fleischer <lfleischer@lfos.de>" is invalid
:: File /var/cache/pacman/pkg/ncurses-6.0+20170429-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n]
error: glib2: signature from "Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>" is invalid
:: File /var/cache/pacman/pkg/glib2-2.52.1+4+g2eddcef1e-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n]
What should I do? I tried pacman -Syyu but that didn't help
Edit: Fixed it with pacli
if looks like you require some detailed documentation of pacman-mirrors and the simple help function is not enough for you.
please look here for a detailed documentation (for the latest development version of pacman-mirrors):
The update seemed to go more or less okay using the UK mirrors.
At some point I left for a few mins, when I returned the screen were completely blank. Pressing random keys and the "obligatory mouse click(tm)" didn't do anything, even tried switching tty's, nothing. So thinking it's smegged (broke) I initiated the sinking ship three-finger-salute (ctrl+alt+del) and somehow a tty appeared yay.
Spammed the pacman -Syyu repeatedly until no more updates were found, rebooted and everything seems okay.
Nice job guys!
So it looks like I should uninstall Evolution and give up any customization. 
I can confirm having experienced random stalls of the LAN connection, but not since this update, it was until the before-last or so. I have the impression that the behaviour has improved with the present update ... it's a little weird though ...
EDIT: oops; I saw you downgraded the package ... so I'll try that if my LAN borks again ... 
Yes, I am running now networkmanager version 1.6.2-3 and I have a stable LAN connection. It was not the case with the new 1.8.0-1 version. Hope it will works for you also... in case you have the same issue.
Thank you for this fantastic work. Everything went fine with this huge update. Biggest update I've experienced with lowest number of config files to check.
And best: I was able to finally upgrade libvirt and qemu, which were blocked due to a bug. They work like charm now again.
mobile broadband usb sticks huawei model k4203 and k4606
not working after update.
fixed by downgrade networkmanger
I had the same issue. I removed gstreamer10-good-plugins and then updated the system and now it all seems to run fine.
I'm running XCFE with a mix of gnome and KDE apps thrown in.
To do this using the terminal I did the following commands:
sudo pacman -Rns gstreamer0.10-good-plugins
sudo pacman -Syu
All's well with the system, a few (probably upstream) bugs on gnome:
Using Xfce-4-Terminal, confirmed mirror status, and ran sudo pacman -Syu. No issues on Xfce Laptop with intel integrated GPU. Thanks to all of you, as I did read many of your posts before updating!
Hi guys,
Anybody using opera browser having trouble watching youtube ?
i had to downgrade sqlite package 3.18 to previous 3.17.
Sqlite 3.18 crashes opera browser by turning my system in a read only fs ( this system is installed on a btrfs /@ single partition) when and only when watching video like youtube.
When starting opera in a terminale, there is lots of errors that pile up as soon as a video is started, after about 30 sec, the laptop turn into a â– â– â– â– â– until hard reset. 
After downgrading sqlite there is no more errors in terminal
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