Index: xymonproxy/xymonproxy.c
===================================================================
--- xymonproxy/xymonproxy.c	(revision 7358)
+++ xymonproxy/xymonproxy.c	(working copy)
@@ -967,8 +967,14 @@
 		else {
 			selecttmo.tv_sec = 1; selecttmo.tv_usec = 0;
 		}
+
 		n = select(maxfd+1, &fdread, &fdwrite, NULL, &selecttmo);
-		if (n <= 0) {
+
+		if (n < 0) {
+			errprintf("select() failed: %s\n", strerror(errno));
+		}
+		else if (n == 0) {
+			/* Timeout */
 			getntimer(&tmo);
 			for (cwalk = chead; (cwalk); cwalk = cwalk->next) {
 				switch (cwalk->state) {