diff --git a/apps/recorder/resize.c b/apps/recorder/resize.c
index 563d69f874..46c57bcb03 100644
--- a/apps/recorder/resize.c
+++ b/apps/recorder/resize.c
@@ -5,7 +5,7 @@
  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
  *                     \/            \/     \/    \/            \/
- * $Id
+ * $Id$
  *
  * Copyright (C) 2008 by Akio Idehara, Andrew Mahone
  *
diff --git a/apps/recorder/resize.h b/apps/recorder/resize.h
index 133ac50fdd..8a39db503a 100644
--- a/apps/recorder/resize.h
+++ b/apps/recorder/resize.h
@@ -5,7 +5,7 @@
  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
  *                     \/            \/     \/    \/            \/
- * $Id
+ * $Id$
  *
  * Copyright (C) 2008 by Akio Idehara
  *
diff --git a/firmware/thread.c b/firmware/thread.c
index 377c3355b4..2102c2f54c 100644
--- a/firmware/thread.c
+++ b/firmware/thread.c
@@ -3123,10 +3123,12 @@ void init_threads(void)
         thread->stack = stackbegin;
         thread->stack_size = (uintptr_t)stackend - (uintptr_t)stackbegin;
 #if NUM_CORES > 1  /* This code path will not be run on single core targets */
-        /* Initialize all locking for the slots */
         /* Wait for other processors to finish their inits since create_thread
          * isn't safe to call until the kernel inits are done. The first
-         * threads created in the system must of course be created by CPU. */
+         * threads created in the system must of course be created by CPU.
+         * Another possible approach is to initialize all cores and slots
+         * for each core by CPU, let the remainder proceed in parallel and
+         * signal CPU when all are finished. */
         core_thread_init(CPU);
     } 
     else