Got a xsara picasso 1.8 16v. It has a tendency to stall itself, and just be a little 'fluffy' if that makes sense sometimes.
It's OK when it's going and your driving along, but it's more when slowing down, and then going to put your foot down again.
It just had a service for the first time in 3 years.... and I wasn't sure if it was more coincidence or something has happened. It has had an engine management light on for a while, although I'm not sure what the code is at the moment... Doesn't help the cause, but as said has only just started getting worse since the service etc.