Index: trunk/Ohana/src/opihi/pcontrol/CheckSystem.c
===================================================================
--- trunk/Ohana/src/opihi/pcontrol/CheckSystem.c	(revision 39457)
+++ trunk/Ohana/src/opihi/pcontrol/CheckSystem.c	(revision 42389)
@@ -4,4 +4,11 @@
 static struct timeval lastlive = {0, 0};
 static RunLevels RunLevel = PCONTROL_RUN_NONE;
+
+static int CheckSystemThreadRuns = TRUE;
+
+void QuitCheckSystemThread (void) {
+  CheckSystemThreadRuns = FALSE;  
+}
+
 
 RunLevels SetRunLevel (RunLevels level) {
@@ -67,5 +74,5 @@
   gprintInit ();
 
-  while (1) {
+  while (CheckSystemThreadRuns) {
     // stop here if the user-thread requests (no objects in flight) 
     TestCheckPoint ();