I believe part of the reason that i had the early rapid weiht drop is that this last weight on me hasn't been on me that long- meaning that i recently had put on about 8 pounds dieting, and I put on about 20 pounds after mid 2006 when i was ill & stopped smoking. So none of the weight i just lost was on me for very long.
The rest of my excess weight was put on over the preceding 6 years and resulted from age, illness, and medication (prednisone). I hope that weight will leave as quickly as the later weight.