Index: libcfa/src/concurrency/kernel/startup.cfa
===================================================================
--- libcfa/src/concurrency/kernel/startup.cfa	(revision e67a82d79e32a55496140aa883716d9123ccc7f7)
+++ libcfa/src/concurrency/kernel/startup.cfa	(revision 10d78f12067a0f1c201ec831d30f0e6b49f4ef8f)
@@ -579,4 +579,5 @@
 
 	// Lock the RWlock so no-one pushes/pops while we are changing the queue
+	disable_interrupts();
 	uint_fast32_t last_size = ready_mutate_lock();
 
@@ -586,4 +587,6 @@
 	// Unlock the RWlock
 	ready_mutate_unlock( last_size );
+	enable_interrupts_noPoll(); // Don't poll, could be in main cluster
+
 
 	this.io.cnt  = num_io;
@@ -601,4 +604,5 @@
 
 	// Lock the RWlock so no-one pushes/pops while we are changing the queue
+	disable_interrupts();
 	uint_fast32_t last_size = ready_mutate_lock();
 
@@ -608,4 +612,5 @@
 	// Unlock the RWlock
 	ready_mutate_unlock( last_size );
+	enable_interrupts_noPoll(); // Don't poll, could be in main cluster
 
 	#if !defined(__CFA_NO_STATISTICS__)