Came across this in a news feed to my FB page - not sure if the mechanism was the same for Maclaren strollers sold in Australia...
Additional Fingertip Amputations and Lacerations Prompt Reannouncement of November 2009 Recall of Strollers by Maclaren USA


bit of a bummer for me because we are going to the US next month and I was going to buy a 2nd hand Maclaren - looks like that may not be such a good idea (sounds like the flaw was fixed in post-2009 Maclarens)