Tweakers.net crashed?

Mostly when they are upgrading Tweakers.net (famous Dutch IT website & Forum), you see a under construction page. I’m not entirely sure what happened, but when I try to visit http://tweakers.net or (the forum) http://gathering.tweakers.net I receive strange errors.

Does anyone know what happened? Ehh..probably I can better ask this in Dutch because the website is only available in Dutch also….

Iemand een idee wat er bij Tweakers aan het handje is?

Update : The website is up and running again. Check here for the cause of the problems (in Dutch)