I ran pacman -Syu on two different machines yesterday, one with KDE and one with xfce. Neither asked me for anything to do with the language and it reverted to German until I installed libreoffice-en-US. The default US English had worked fine prior. I also had to do "pacman -S libreoffice-{base,calc,impress,writer,math,draw} to get everything running again as per the wiki on libreoffice. -Vince