Did you apply as part of a school recruiting season? If so, odds don't look good.
Did you apply as an experience hired? If so, the rules are much less clear. In general, I'd say 5 weeks is too long - it took BCG 4 weeks to get back to me, and that's about the longest I've heard.
Why did you call the receptionist? Don't you have the contact of an HR staff, or haven't you worked with a consultant already? They should be the first point of contact. If you don't know anyone, they you are just one of zillions of candidates and your odds are very low.
Look, bottom line is, it's not looking good. Feel free to ask again, but I'd move on mentally and focus on other companies now.