No problems yesterday at EBBR (Brussels). From colleagues that went to Dusseldorf, no problem to. Obviously some Iraqi-US war related country-airports (UK, Spain) will have more severe control than you will experience in other countries. I heard that a few weeks ago, a German spotter was refused to use the different spottingviews at Manchester-airport (UK) by guards.
"no pictures from terminal B" (at BRU)??? I have had no problems. On the other hand I always remain low profile. Are you sure you are not confusing with the "no photography" signs as you go through security? This is only valid for the security area.