Submitted our (hopefully final)AOS paperwork packet today 8/30/10. I-130 sibling sponsorship (brother) filed in April 2001, so it took just over 9 years. I am thrilled that my priority date has finally been reached.
Good luck to all those in a similar situation and to those of you just filing I-130 for a sibling: hang in there! You never know how quickly things may move up when you least expect it - mine did. I was told to expect to wait another 3 years yet now I am finally seeing the light at the end of the green card tunnel