It's unfortunate yes... but more unfortunate that it is to be expected...
Despite the nobility of many the UN's actions and people, there is always that small minority out there to exploit. It is the flaw within many orginizations that a small, sick element can tarnish the image of the whole (something that we as greeks should be more than aware of).
Now for as this being a problem wholely of the UN and it's personnel

hardly. As we have seen (and not seen) in the news over the years, soldiers and administrators of many nationalities have commited horrible acts while their comrades are performing honourably... and no country's forces are immune to it - lest we forget the torture and death of a Somali teen by Canadians; the targeted assassination of sympathizers to the IRA by British Paratroops; the Israeli commander who emptied a magazine into an innocent girl;
the torture and execution of captured Hutu by the Foreign Legion; or even the recent sex-killing of an Iraqi by an American soldier....
http://cnn.netscape.cnn.com/news/sto...52.htm&sc=1110