As I was wondering where to drop localized files for the current Weave add-on, I was told to file a bug for adding the possibility to localize it in #labs, so here it is. Dutch (nl) files are ready, but there is no repository to drop them, AFAIK. Babelzilla currently contains an entry for (outdated) version 0.1.12.9 of this add-on, but it looks like that isn’t valid for the current development version. Not sure if new l10n for Weave needs to be done by using Babelzilla as well or by adding files to this (or a related) bug, but either is fine with me.
http://hg.mozilla.org/weave-l10n/nl/ is there.