Uhm bad luck ? XD they dont have to do anything, they can even resett or band you when they want. =)
Bro, relax a little, I'll tell you how these "events" work. What they do is reduce the overall likelihood of a good yellow or orange item occuring overall, then apply their "special bonus". The end result is perhaps a slightly higher chance to get something decent.
For example, lets say you had a 5% chance originally. What they will do is cut that to, say, 3 or 4%, then apply their "bonus", which, even if it is at 200%, only increases your chance to 6 or 8% total, for not much of an improvement overall.
I'm in America, on Mediah server, and there is no great storm of yellows and oranges raining down. In fact the rate of display hasn't changed much at all.
Just keep focused on grinding, you'll get what you want eventually. ;)