I am still really bothered by this interview. I was called into their office for an interview with less than a weeks notice. I had to use a vacation day to attend the interview. The interview lasted for about three hours. First I spoke one-on-one with the hiring manager, the with a panel of employees. I followed up via email several times. After the second follow up email they stoped responding. This was about a year ago. In my opinion this is really unprofessional. It was a huge waste of my time and paid vacation leave. They permanently diminished my respect for their organization, and I will be very careful not to work with them in the future.