I think that's high - but not different than what I've heard from many others. I also recently visited our career center to double check my facts against their recruitment experience/knowledge, and it came out the same. The thing they did was suggest people work more in small firms than is obvious.

http://www.internetbar.org/Article20.html (1st p)

In 2000, " The ABA Career Satisfaction Survey (2000) showed 46.8 % of associates at large firms nationally work more than 60 hours per week,"
http://www.pardc.org/Publications/lf_interim_report.shtml

The firm will award bonuses only to associates who billed 2,000 hours or more. All associates who billed less than 2,000 hours will receive only a $10,000 bonus. “The firm will continue its practice of paying an additional bonus to those associates . . . who have worked hours significantly exceeding target.” An additional bonus of $10,000 will be paid to associates who billed at least 2,300 hours, and another $10,000 bonus will go to associates who billed at least 2,500 hours.
http://blogs.wsj.com/law/2006/12/20/should-law-firms-tie-bonuses-to-hours-billed/

This one was fun - caught billing 3200 hours a year
http://blogs.wsj.com/law/2006/11/10/3200-hours-a-year-you-gotta-be-kidding-me/

I'm not saying I wouldn't work in a firm, just that right now - until I find data or an offer that shows something significantly different - I'm better off in gummint.