Index: libcfa/src/concurrency/kernel/startup.cfa
===================================================================
--- libcfa/src/concurrency/kernel/startup.cfa	(revision c90db2db871a3e57c7c5f98cc53831bb1ca50d84)
+++ libcfa/src/concurrency/kernel/startup.cfa	(revision 040334e1377f9d717d5f1b39e87eaec92fdeaa88)
@@ -537,4 +537,11 @@
 	}
 
+	this.idle_wctx.fd = 0;
+
+	// I'm assuming these two are reserved for standard input and output
+	// so I'm using them as sentinels with idle_wctx.
+	/* paranoid */ verify( this.idle_fd != 0 );
+	/* paranoid */ verify( this.idle_fd != 1 );
+
 	#if !defined(__CFA_NO_STATISTICS__)
 		print_stats = 0;
@@ -590,5 +597,5 @@
 // Cluster
 static void ?{}(__cluster_proc_list & this) {
-	this.fd    = 0;
+	this.fdw   = 0p;
 	this.idle  = 0;
 	this.total = 0;