Mansterfred
So far, in every case the answer was either that:
* The advertiser was looking at a date range that included a time when the Max CPC was in fact higher. So the average CPC, (which is an average over the entire date range) may well show as higher than the current setting.
* The keyword in question has an individual Max CPC that is higher than the default Max CPC for the Ad Group.
Hope this solves it.
Mansterfred