We have a site in Danish, English and "language-neutral" site (the latter is used for pages that is shown in both the Danish and the English version of the site).
When any role other that the admin role edits an English node, the language of the node is switched from English to Danish!!!!!!
We have looked in vain for a missing setting but cannot find any. The locale setting (administer languages) and content translation is the same for both the admin role and other roles.
We are using workbench access.