It seems like the table of contents doesn't show the actual text "Table of Contents" when you're visiting a revision of the site. An example:
http://tnldp.org/doku.php?id=retningslinjer&do=diff&1115546865
There you see that the norwegian translation for "Table of Contents" doesn't appear. Whether this only happens to me, I don't know, but I thought that I should notify you guys about it just in case.