I believe the localizations should be up to date in OmniFocus for Mac 1.7.4, which they can grab from
this link.
If folks are still seeing problems in that release, please contact the
support ninjas and let them know.
(As far as I know, we haven't been getting reports of lots of localization issues, but I haven't been working on other projects for the last couple of weeks, so my info may be out of date.)