Missing directors

Quite a few of my films have missing directors, even though they show fine at IMDB. Examples (not all though, it's as far as I got through my list):

www.listal.com/viewproduct/movies/63895
www.listal.com/viewproduct/movies/63453
www.listal.com/viewproduct/movies/63445
www.listal.com/viewproduct/movies/63318
www.listal.com/viewproduct/movies/17819
www.listal.com/viewproduct/movies/42333
www.listal.com/viewproduct/movies/27613
www.listal.com/viewproduct/movies/40183
www.listal.com/viewproduct/movies/8658

For some strange reason, a lot of them are Korean films. Other than that there isn't much of a reason for them not to be showing up...

I had the same problems importing those movies from IMDB:

www.listal.com/viewproduct/movies/63901
www.listal.com/viewproduct/movies/63900
www.listal.com/viewproduct/movies/63899

They are italian movies, but I hadn't the same problems during past weeks.
Is there any bug?

Thank you

Carlo

Not sure if it is linked or not, but three of the films that I listed (Calla, Ice Bar and Surprise Party) also aren't showing up when I search for my "Korean" tags from another film page. They show up when I click the "Korean" tag from my films overview page though.