It's actually really obvious. I don't why the American Administration hasn't tried this given its desire to find the guy and its willingness to search, seize and wiretap everyone in sight.
1. Find Bin Laden's alma mater.
2. Locate that institution's alumni association.
3. Hack in to their records. It's guaranteed that they have an up to date phone number and (more importantly) mailing address.
If this proves too tricky, just put a really tiny GPS device on one of the glossy magazines that the university sends out. Track it via satellite. No matter where the guy goes, you know that glossy alumni magazine will find him.
Done. Move on to the next criminal.