Just popping my head back in the forum after a long time!

Glad to see the thread got resurrected, although Emma's day from hell certainly sounds like no fun. At least it sounds like that issue was resolved.
For the long-term update on my little saga that started the whole thread, the guy's been gone for over 6 months now or so, and it's been glorious. Lab is peaceful and productive and conflict-free.
I found the discussion of keeping track of how long everyone works interesting. I tend to work 6-8 hours/day physically in the lab during the week, and maybe 1-2 hours if needed on the weekend. But I do a lot of writing, data analysis, and just general thinking about my experiments when I'm home. I can say with absolute certainty that my PI is completely pleased with my productivity, and wouldn't care if I were working 12-14 hours/day in the lab instead. In fact, she would probably tell me to take a rest. But in reality if I take into account the work I do at home, and over supposed "vacations" etc., it probably comes out to >10 hrs/day.
It's funny, though, sometimes I worry that other people in my lab might think I don't put in the hours, but then I can't really determine how many hours they're working, either. I think it's one of those things were you think everyone's noticing, but really they couldn't care less.