Commented Unassigned: date validation problem [1503]

I created a new MVC4 project in VS2012 with the basic template. I created a model class with a DateTime property. I added a default controller that sets the property to DateTime.Today and a default view that displays the editor for this property. I also included the jqueryval script bundle in my layout, they were in my project by default. When I run the project, there is a textbox with the value "2013.12.12. 0:00:00". But when I press submit, it says its invalid.
Comments: Problem may be browser-specific or fixed in more recent packages. I'm still unable to reproduce the problem. Have sent a private request for clarification of the scenario to fejesjoco. Moving to 5.2 at least for now.