I wanted to share with the forum a recent negative experience that I had with United's Mileage Plus program. I travel work some what frequently. (~50,000 miles a year). I recently went to Nairobi from New Orleans via Brussels. I flew United from New Orleans to Newark and on to Brussels. From Brussels I flew Brussels Airlines to Nairobi (a Star Alliance Member). I bought the tickets for the whole trip through United. Apparently the Star Alliance Members will only award frequent flyer miles for certain classes of ticket. This wasn't clear to me when I brought the ticket. Brussels Airlines will not award the miles for "L" class tickets. On the Brussels to Nairobi leg of the trip I did not receive any of the 4000+ miles. I called Milleage Plus and emailed with them several times and Inited would not do anything about this situation. It was very frustrating and disappointing.