Comment 16 for bug 627648

In fact, if I use the 'Copy all to clipboard' option to save a text file with the paper size as A4 and as US Letter, diff finds no differences. So basically the user's preference for this is not being saved in the usual manner. Maybe this is why it is clobbered on upgrades?
It is still not an excuse for defaulting to US Letter in the first place, when the environment (such as LANG="en_GB.utf8" in my case) is clearly for the European option, and not US.