Nokia interview questions

I had a phone interview to discuss my past experience and how I could improve their product. Three weeks after I was invited to their offices (they pay for that) and had 5 interviews, mostly about project management. At the middle of every interview they usually asked me to make questions. Only one of the interviews was really technical.

I had one technical interview by end of march 2009. then after 10 days I had an assessment test. there was 5 other guys at that assessment. They told me that I am accepted, but I didn't hear from them till now. I called them by middle of June and they told me that they still waiting for the approval " i don't know what kind of approvals that take 4 months". I hope that they have different strategy with work. the strange thing is that the other 5 guys started work about a month ago " one of the 5 guys is a friend of mine and he told me that". I hope that one of the HR managers can explain this for me !