About 7 hours in, got it yesterday afternoon.
About 4 and 1/2 hours in i got the fallout fever i did in 2008 august with fallout 1 and nov of that year with fallout 3. Just got through first actually challenging part.
When it comes to bugs, not really seeing too many serious one. No CTD, no quest breaking, using the .dll trick and seeing the white blocks but not too bad.
I'm sure that before this time I've probably spent at least 200 hours of my life on fallout games.