What is the age of the oldest person with down syndrome?

According to http://www.associatedcontent.com/article/29583/facts_and_the_future_of_progeria_pg2.html there was a Japanese man who lived with the disease for 45 years.

Currently (Feb 2010) Leon Botha is the oldest person living with Progeria (24 yrs old). http://www.mg.co.za/multimedia/2010-01-14-transcend-and-transgress

Most people with the condition live to their early teens.