Update:
Update: I have been in contact with Dlink multiple times and the result is that we never found out what was wrong. Instead Dlink sent me a new 935L as the the camera we was testing with died upgrading the firmware. I have now bought a new D-link accespoint (DIR-605L) and my second 935L has no problem with this accespont so what I can conclude is that the new firmware is not working very well with non-dlink accespoints.
However, I have now experienced a new problem with the 935L: Poor wireless performance, I will make a new topic concerning this.
Regards