I had an XD11 refurbished last year. The repairman listened to the shutter and was satisfied with its response, which puzzled me. He said something about some XD11s having a hesitation because of some internal fouling (my words, I don't remember exactly what he said). Take it in for a CLA and it may clear up. I have noticed, on the other hand, that shutter lag on a newly-CLA'd XD11 is a hair longer than usual. It's a great camera, just don't use it for sports.