Hi TechDragon. Since no one's taken a shot at an answer I'll give you the result of a search for "Recent" on my Gnome system.
Code:
[glenn@coolhand ~]$ locate Recent
/home/glenn/.kde/share/apps/RecentDocuments
/home/glenn/.kde/share/apps/RecentDocuments/.desktop
/home/glenn/.picasa/drive_c/Documents and Settings/glenn/Recent
/usr/lib/python2.5/site-packages/MoinMoin/macro/RecentChanges.py
/usr/lib/python2.5/site-packages/MoinMoin/macro/RecentChanges.pyc
/usr/lib/python2.5/site-packages/MoinMoin/macro/RecentChanges.pyo
/usr/lib/python2.5/site-packages/xdg/RecentFiles.py
/usr/lib/python2.5/site-packages/xdg/RecentFiles.pyc
/usr/lib/python2.5/site-packages/xdg/RecentFiles.pyo
/usr/share/moin/underlay/pages/RecentChanges
/usr/share/moin/underlay/pages/RecentChanges/current
/usr/share/moin/underlay/pages/RecentChanges/revisions
/usr/share/moin/underlay/pages/RecentChanges/revisions/00000001
I see the same as you i.e., no way to stop it, only clear it.
I wonder if it has to do with the RecentFiles.py* files.