OS 10.4.11 iMac G5 The finder "refreshes" every minute or so--closing all its open windows. It stops any finder activity during this "refresh." For example, copying a file to another disk--it will interrupt the process. It does leave application windows open but leaves the program to go to back to the finder. It does not matter if I am actively using the applications or not. I have been interrupted during this post several times already. Any suggestions?