diff -ruN samba-3.4.5/source3/lib/util_sec.c samba-3.4.5/source3/lib/util_sec.c
--- samba-3.4.5/source3/lib/util_sec.c	2010-01-18 06:38:09.000000000 -0500
+++ samba-3.4.5/source3/lib/util_sec.c	2010-02-21 11:59:02.000000000 -0500
@@ -208,6 +208,7 @@
 
 #if USE_SETREUID
 	setreuid(-1,uid);
+	set_re_uid();
 #endif
 
 #if USE_SETEUID