diff -rNaud shadow-4.1.4/src/groups.c shadow-4.1.4-new/src/groups.c
--- shadow-4.1.4/src/groups.c	2009-04-30 17:08:50.000000000 -0400
+++ shadow-4.1.4-new/src/groups.c	2009-07-22 14:10:26.000000000 -0400
@@ -66,7 +66,16 @@
 		                Prog, member);
 		exit (EXIT_FAILURE);
 	}
+	
+	/* first we get the main group (patched by JP Guillemin for Zenwalk GNU/Linux) */
+	if (!flag && (grp = getgrgid (pwd->pw_gid))) {
+		if (groups++)
+			putchar (' ');
 
+		(void) printf ("%s", grp->gr_name);
+	}
+	
+	/* then we get secondary groups */
 	setgrent ();
 	while ((grp = getgrent ()) != NULL) {
 		if (is_on_list (grp->gr_mem, member)) {
@@ -83,19 +92,6 @@
 	}
 	endgrent ();
 
-	/* The user may not be in the list of members of its primary group */
-	if (!flag) {
-		grp = getgrgid (pwd->pw_gid); /* local, no need for xgetgrgid */
-		if (NULL != grp) {
-			if (0 != groups) {
-				(void) putchar (' ');
-			}
-			groups++;
-
-			(void) printf ("%s", grp->gr_name);
-		}
-	}
-
 	if (0 != groups) {
 		(void) putchar ('\n');
 	}