I just checked (5 mins ago) the afternoon flight DXB-DUS on March 12. According to KVS, it is booked up in all classes of service (no matter which method of search I use). But: On EK's website they offer me availability in full-fare F and J for exactly that flight!

This is annoying, because it means that KVS does not reliably tell me when a flight is really booked up so that I could use the EK booking guarantee to get an economy seat (see my other thread: http://www.flyertalk.com/forum/emira...l#post13523231).