Red Hat :: Auditing On Folder And Files In 5.0?

I have a rhel5 as my file server with active directory intergeration and using samba for folder sharing ,webmin to manage the shares.We haveany folders and subfolders and files.We are facing the following issue.We had given a folder called yardworklist which is shared by 8 people with full access.The yardworklist will have more than 80 folders which represents each ship.The problem we are facing is some user copy a folder or file from a specific ship folder say SEA HERON to another ship's folder say BOW CLIPPER.The next day the person who wants to work on SEA HERON found the file or folder was missing and use his search tool to get the folder or file. I dont know who is the person did this.Basically a event log will also be enough like which file has been copied by whom to which place.