I applied online. The process took 3 weeks. I interviewed at Aon in Mar 2010
Interview
I had a phone interview with a couple people. The on-site interview consisted of lunch, and four half-hour sessions when I interviewed with two-people-at-a-time. They gave me some logic tests to solve and asked me a bunch of questions similar to "tell me about a difficult situation you've had with a coworker and how you sent about solving it."
Interview questions [2]
Question 1
Tell me about a time that you've failed at something and how you went about eventually succeeding.
The process took 2 weeks. I interviewed at Aon (Atlanta, GA) in Apr 2010
Interview
Most of the questions are behavior orientated, nothing really technical. 2nd phone screen is not that hard either since pretty much you just talked the same thing with an senior VP instead of HR from the headquater.
Interview questions [1]
Question 1
How would you deal with situation when one of the team members is not doing his work properly?