The whole debate about a possible link between the MMR vaccinations and autism began after my oldest three children had the series. I was a bit worried when the twins started in 2000, but from all that I have read, there has been no definite link. (Still, it did cause me some worry.)
My second ex husband's ex wife's son by her second husband (got that?! hehehe) was diagnosed with autism around age 2. He is 6 now. She has been on a crusade (spends all her extra time and money) on trying to settle a claim against the drug company that maufactures the vaccine, claiming that there is no way in h*ll she would have a child with autism, so of course the preservative caused him to develop it. Anyway, this all started while I was pregnant with the twins, so she kept sending me "scary" emails. It was hard to be objective when there was this fear factor, but I went with my gut. And they're fine...(sort of, four year-old twin boys...help!) and just had the last in the series a few weeks ago.