Buying C200Kompressor in Australia, what should I look out for
 

Hi, a freind of mine wants to buy a 2002-03 C200K. I know in the states they only came out with the C230K I believe. I was wondering what my friend should look out for when checking cars. When I was in the states I remember a friends SLK230K suffered a broken compressor. Fortunately fixed under warranty. Is this a common problem?
cheers