My high master glass maker(an immigrant) get a mood. Sadly, I didn't trade for any glass and in all honesty, I didn't want to bother making any because this dwarf was not really useful in my book other than his starting skills in glass making. He was a soaper too and a cheese maker, so I said, meh...
Error #1
After a few minutes, I decided... Why not try and give him the material? I destroyed the walls around the workshop and then started trying to make some glass for him. I had to make the charcoal and crap to start the industry, seeing as I have no magma to work with yet.
Error #2
The dwarf goes crazy shortly after, he is raving mad, but he isn't really troublesome. He climbed down into my mining hallways and kinda got lost there, so I said he'll eventually die down there without causing any problem, so I left it at that.
Error #3
The elven caravan comes along to trade and I really needed the wood (I started in a place where there are around 50 trees at all time on a 3x3 embark), usually, I'd just steal everything, but it has been a very long time since I played DF, so I decided not to make them angry right away... I trade the wood, everyone goes well, when my mad dwarf climbs all the way back up to the surface, topples the trade depot while the merchants are on it and goes back into my mining hallways. What a b****...
Result
Well, I guess I'll be looking into FUN very soon!