You commute too long. That's where those missing 2 hours are going. My example's extreme, but:
8:30 Wakeup, shower, breakfast
9:00-9:50 Browse the net, email
9:50-10:00 Walk to work
10:00-18:00 Work
18:00-20:00 Buy groceries, cook, eat, do dishes
20:00-21:30 Relax in some way. May include tv, movies, exercise. Sometimes extra hacking.
21:30-01:00 Hack (may include leftover work)
