bartek has made a credible threat on his own life. All I know about him is that he lives in Germany. If anybody can get more information- perhaps a phone number- and can contact him in some way, or perhaps make the German equivalent to a 911 call with his contact information, that would likely be the prudent course of action to take.
As far as I can determine, Bartek has taken an overdose of some form of medication; what is unclear from his posts is whether or not he intends to go through with his stated plan to jump off the 9th story of whereever he is- whether he has decided to do so or to not do so. Whichever it is, somebody with more information than me needs to ACT NOW.