diff --git a/arch/x86/mm/svm.c b/arch/x86/mm/svm.c
index 1dd2075f..eb31c08c 100644
--- a/arch/x86/mm/svm.c
+++ b/arch/x86/mm/svm.c
@@ -128,7 +128,7 @@ int svm_access_request(size_t addr)
         icc_send_irq(remote_rank);
 
 	/* check for incoming messages */
-	icc_mail_check();
+	icc_mail_check(0);
 
 	while (page_owner[pageid] != my_ue) {
 		NOP4;
diff --git a/arch/x86/scc/iRCCE_mailbox.c b/arch/x86/scc/iRCCE_mailbox.c
index 67fd45d7..76424287 100644
--- a/arch/x86/scc/iRCCE_mailbox.c
+++ b/arch/x86/scc/iRCCE_mailbox.c
@@ -410,12 +410,12 @@ int iRCCE_mail_send(
 	// if dest mailbox is full, check for incoming mail
 	RC_cache_invalidate();
 	while( iRCCE_mailbox_send[dest]->sent ) {
-//		iRCCE_mailbox_check();
+		iRCCE_mailbox_check();
 		RC_cache_invalidate();
 	}
 
 	/* disable interrupts */
-	flags = irq_nested_disable();
+//	flags = irq_nested_disable();
 
 	// check if mailbox is closed
 	RCCE_acquire_lock( dest );
@@ -451,7 +451,7 @@ int iRCCE_mail_send(
 	RCCE_release_lock( dest );
 
 	/* enable interrupts */
-	irq_nested_enable(flags);
+//	irq_nested_enable(flags);
 
 	return iRCCE_SUCCESS;
 }
diff --git a/arch/x86/scc/icc.c b/arch/x86/scc/icc.c
index 2c2ca46d..a3571905 100644
--- a/arch/x86/scc/icc.c
+++ b/arch/x86/scc/icc.c
@@ -240,7 +240,7 @@ int icc_halt(void)
 
 #define ROUNDS 10000
 #define CORE_A 0 		// sender
-#define CORE_B 1		// receiver 
+#define CORE_B 4		// receiver 
 
 
 int icc_send_gic_irq(int core_num) {
@@ -268,7 +268,7 @@ static inline void icc_mail_check_tag(iRCCE_MAIL_HEADER* mail) {
 	static int count = 0;
 	
 	if( !mail ) return;
-
+	
 	switch( mail->tag ) {
 	case iRCCE_ANYLENGTH:
 		recv_buffer = (char*)kmalloc( mail->size );
@@ -277,13 +277,12 @@ static inline void icc_mail_check_tag(iRCCE_MAIL_HEADER* mail) {
 		break;
 
 	case PING_REQ:
-//		kprintf( "PING_REQ" );
 //		count++;
 		iRCCE_mail_send(0, PING_RESP, 0, NULL, mail->source);
 		break;
 	
 	case NOISE:
-//		kprintf( "XXX " );
+		kprintf( "XXX " );
 	default: 
 //		kprintf( "icc_mail_check_tag: uknown tag id %d\n", mail->tag );
 		break;
@@ -429,43 +428,45 @@ int icc_mail_noise() {
 	int num_ranks = RCCE_num_ues();
 	iRCCE_MAIL_HEADER* recv_mail = NULL;
 	int flags;
-/*
+
 	// leave function if not participating
-	if( (my_ue == CORE_A)  || (my_ue == CORE_B)  || (my_ue > 25) ) {
+	if( (my_ue == CORE_A)  || (my_ue == CORE_B) ) {
 		kprintf( "mail_noise: leaving" );
 		return -1;
 	}  
-*/
-	if( !((my_ue == CORE_A) || (my_ue == CORE_B) ) ) {
-		kprintf( "mail_noise: leaving" );
-		return -1;
-	}
+
 
 	kprintf( "Hello from icc_mail_noise: my_ue = %d\n", my_ue );
 	kprintf( "num_ues = %d\n", num_ranks );
 	int count = 0;	
-	for( i=0; i<100000 ;++i ) {
+	for( ;; ) {
+		kprintf( "SEND NOISE  - " );
 		/* send a mail to each UE */
 		for( j=0; j<num_ranks; ++j ) {
-			if( !((j == CORE_A) || (j == CORE_B)) )
+			if( (j == CORE_A) /*|| (j == CORE_B) */)
 				continue;
-
+			
 			/* send noise mail */
-			iRCCE_mail_send(0, NOISE, 1, NULL, j);
+			iRCCE_mail_send(0, NOISE, 0, NULL, j);
 #ifdef _IRQ_NOISE_
 			icc_send_gic_irq(j);
 #endif
 		}
 
 #ifndef _IRQ_NOISE_
-		iRCCE_mail_check(iRCCE_MAILBOX_ALL);
-#endif
 		/* read some mails  */
+		flags = irq_nested_disable;
+
+		iRCCE_mail_check(iRCCE_MAILBOX_ALL);
+		
 		while( iRCCE_mail_recv(&recv_mail) == iRCCE_SUCCESS ) {
 			icc_mail_check_tag(recv_mail);
 			iRCCE_mail_release(&recv_mail);	
 		}
 
+		irq_nested_enable(flags);
+#endif
+
 	}
 	
 	return 0;
@@ -511,6 +512,7 @@ void icc_mail_check(int irq)
 			irq_reset_reg = (volatile uint64_t*)(FPGA_BASE + IRQ_RESET + my_ue*8);
 			*irq_reset_reg = irq_reset;
 		}
+	
 	}
 	else {
 		iRCCE_mail_check(iRCCE_MAILBOX_ALL);
@@ -521,10 +523,11 @@ void icc_mail_check(int irq)
 		icc_mail_check_tag(header);
 		iRCCE_mail_release( &header );
 	}
-	
+
 	/* enable interrupts */
 	irq_nested_enable(flags);
 
+
 }
 
 #endif
diff --git a/kernel/tests.c b/kernel/tests.c
index f98684e8..299a897e 100644
--- a/kernel/tests.c
+++ b/kernel/tests.c
@@ -416,7 +416,7 @@ int test_init(void)
 	//create_kernel_task(NULL, producer, NULL);
 	//create_kernel_task(NULL, consumer, NULL);
 	create_kernel_task(NULL, mail_ping, NULL);
-//	create_kernel_task(NULL, mail_noise, NULL);
+	create_kernel_task(NULL, mail_noise, NULL);
 	//create_user_task(NULL, "/bin/hello", argv);
 	//create_user_task(NULL, "/bin/tests", argv);
 	//create_user_task(NULL, "/bin/jacobi", argv);