[otrs] Search address book problem

Hi, I just updated to the latest version, 2.1.6. One of my users said that when he is doing a search for a customer in the address book the information doesn't pop up anymore. I looked at this problem and from what I can tell is that perhaps the earlier versions searched on all fields in the CustomerDB (i.e. the whole email address) and the later versions only searches in the name portion and the Customer ID. Can somebody verify this and if so, how can I change this behavior. Thanks, - Swen