Something to do with a pin missing or misaligning with the door, it's a common fault. I had it on my peugeot 206 too. Cr*ppy french engineering! Peugeot dealer sorted it out for me, it's a cheap one to mend so may aswell take it to them. I had mine fixed, works fine now but still have an ugly crease left on the door to remind me of it.
And last night some one broke in to it! Why they couldn't have just stolen it so I could get something good with the insurance money.
Tom, June 2009