Go here and get this tool --> http://www.openntf.org/internal/home.nsf/project.xsp?action=openDocument&name=xpages%20toolbox
Where this should NEVER be used on a production server it can be used to profile the applications on a development server to find the offending apps.
Or if you do not have a development server then REQUIRE the developers to use this tool and provide you the results BEFORE you deploy the application to production.
You can also search the source code of the applications in the Designer client on the keyword "recycle" If it's not found you have found your culprits.