I start a new topic, checkbox issue is solved but I still have a problem with the dates when entering them as '20 January 2012'. After pushing 'apply' dates still show. But after a refresh or submit the dates are gone. I enter them in the same format as in the basic wp settings and have the Strict Date Format option checked.
When i change the wp basic setting to 20/01/2012 all works ok.
Anything to do with the localizing issue?