I'm a pgy-2. I'd say I average about 10 hours a day (8-6), so that's 50 hours a week in clinic. We're on call q6 with every 7th week off, so that adds another 14 hours if it's a weekday call or 24 hours if it's a weekend call. We're in house call for the first 6 months as it is a very busy urban based residency. I guess that makes it anywhere from 50 to 74 hours a week, with the average being in the low to mid 60's. However when you consider the fact that I read about 2 hours a day on any given weekday, and about 6-8 hours on any given weekend day, it goes up significantly, but I don't think most people devote that much time to reading.
No matter what, even at the most stressful times, it's WAY better than being on medicine floors during my intern year.