--- memprof/mi-perfctr.c.bak	2008-03-19 21:51:48.000000000 +0100
+++ memprof/mi-perfctr.c	2008-03-19 21:53:23.000000000 +0100
@@ -94,7 +94,7 @@
 	
 	MI_DEBUG (("Turning on performance monitoring timer support\n"));
 
-	if ((perfctr_fd = open ("/proc/self/perfctr", O_RDONLY | O_CREAT)) < 0) {
+	if ((perfctr_fd = open ("/proc/self/perfctr", O_RDONLY | O_CREAT, 0600)) < 0) {
 		mi_perror ("Error opening /proc/self/perfctr");
 		goto bail;
 	}