The process took 2 weeks. I interviewed at CNA (Los Angeles, CA) in Jan 2012
Interview
Called for a phone screen, later followed by a phone interview with HR. This moved to an onsite interview with 6 various people from the company (low level managers to department heads to VPs). After the interview was asked by HR to fill out an online survey. After about a week, received an email saying that I would not be asked for an offer.
The process took 2 days. I interviewed at CNA in Nov 2011
Interview
I briefly interviewed with one of their recuiters on the phone then within a week interviewed with four of the department heads in one afternoon. They followed up a few days later with an offer. The process was quick and easy. I found the process pleasant and the managers were professional and polite. Be prepared to ask alot of questions since you will be sitting down with alot of people.