diff -U 3 -r nut-2.6.0.orig/clients/upsstats.c nut-2.6.0/clients/upsstats.c

--- nut-2.6.0.orig/clients/upsstats.c	2011-02-08 12:51:41 +0200

+++ nut-2.6.0/clients/upsstats.c	2011-02-08 12:54:26 +0200

@@ -351,6 +351,9 @@

 	char	*newups, *newhost;

 	int	newport;

+	if (!currups)

+		return;

+

 	/* try to minimize reconnects */

 	if (lastups) {

@@ -736,7 +739,8 @@

 			return 1;

 		}

-		currups = currups->next;

+		if (currups)

+			currups = currups->next;

 		if (currups) {

 			fseek(tf, forofs, SEEK_SET);