diff -ru samba-3.0.3rc1-dist/source/param/loadparm.c samba-3.0.3rc1-itee/source/param/loadparm.c
--- samba-3.0.3rc1-dist/source/param/loadparm.c	2004-04-21 06:42:54.000000000 +1000
+++ samba-3.0.3rc1-itee/source/param/loadparm.c	2004-04-21 17:18:06.000000000 +1000
@@ -2521,6 +2521,8 @@
 					strupper_m(*(char **)dest_ptr);
 					break;
 				case P_LIST:
+					if (*(char **)dest_ptr != NULL)
+						str_list_free((char ***) dest_ptr);
 					str_list_copy((char ***)dest_ptr, *(const char ***)src_ptr);
 					break;
 				default: