diff -u -r samba-3.0.1.orig/source/smbd/trans2.c samba-3.0.1/source/smbd/trans2.c
--- samba-3.0.1.orig/source/smbd/trans2.c	2003-12-04 22:38:40.000000000 +0100
+++ samba-3.0.1/source/smbd/trans2.c	2004-02-08 19:27:38.000000000 +0100
@@ -680,7 +680,7 @@
 			 * a Win2k client bug. JRA.
 			 */
 			memset(p,'\0',26);
-			if (!was_8_3) {
+			if (lp_manglednames(SNUM(conn)) && !was_8_3) {
 				pstring mangled_name;
 				pstrcpy(mangled_name, fname);
 				mangle_map(mangled_name,True,True,SNUM(conn));
@@ -802,7 +802,7 @@
 			 * a Win2k client bug. JRA.
 			 */
 			memset(p,'\0',26);
-			if (!was_8_3) {
+			if (lp_manglednames(SNUM(conn)) && !was_8_3) {
 				pstring mangled_name;
 				pstrcpy(mangled_name, fname);
 				mangle_map(mangled_name,True,True,SNUM(conn));