I'm so sorry, I totally forgot to update this thread

Yes I have recieved the projector since a few weeks back, and it has been working just fine. I have used it pretty much every day. So far so good.
Now to the strange part. The answer from Optoma was -"After several tests, we have found nothing wrong with your projector" and also the dealer promised me to test it, which he did for two days after he got it back from Optoma. He didm't find anything wrong either.
Lamp hours: 974 when I sent it. 1014 when I got it back, so they sure have tested it out, which is a really good thing. The dealer said he tested for 2x4 hours so Optoma has put a lot of hours on it. So why did this happen? I did not get any more info on what Optoma have done. All the settings were reset and unfortunately I did not make a note of what firmware revision my projector had. Maybe they cleaned it, re-inserted the lamp or changed firmware, I will probably never know. The dealer said maybe something got inside the projector which caused the problem, and it came lose in the shipping from Sweden to Germany. Something like that.. I experienced the problem during two days. The first day I tried like three times and the day after just one time I and thought; OK now you're going on a trip your bastard.
As long as it is working I am a happy chap again

I would guess I have put 40-50 hours on it since I got it back.