diff --git a/arch/x86/scc/icc.c b/arch/x86/scc/icc.c
index 7d9f4603..bf4c5180 100644
--- a/arch/x86/scc/icc.c
+++ b/arch/x86/scc/icc.c
@@ -253,7 +253,7 @@ int icc_mail_ping( void )
 		iRCCE_mail_recv( &mail );
 	} while( !mail );
 	
-	timer = timer - rdtsc();	
+	timer = rdtsc() - timer;	
 	
 	kprintf( "Received mail in %d ticks!\n", timer );
 
diff --git a/kernel/main.c b/kernel/main.c
index f3b7d36f..9519dafc 100644
--- a/kernel/main.c
+++ b/kernel/main.c
@@ -115,9 +115,7 @@ int main(void)
 	sleep(5);
 	list_root();
 	//test_init();
-	kprintf( "calling mailbox test ... \n" );
 	mailbox_test_init();
-	kprintf( "mailbox test succeded!\n" );
 	per_core(current_task)->status = TASK_IDLE;
 	reschedule();