The list of topics on France have July 28, 2014 dates but they are from April 2014. Hello, webmaster.... Anybody....?
I'm guessing that there was some spam posted to those threads that has gotten deleted.
I've noticed this before after spam has been deleted. The last update shown in the view is recent but the latest post in the thread is old.
What I guess is happening is that the last update date for the thread is automatically set for any update (including a delete). What it really should show is the max date for the posts in the thread.
The webmaster has already given his mea culpa under "General Europe". Notice that they are all with times between 3:39 pm and 3:41 pm PDT.