diff --git a/platform/minimal-net/contiki-main.c b/platform/minimal-net/contiki-main.c
index e0365b995..8d4414aa6 100644
--- a/platform/minimal-net/contiki-main.c
+++ b/platform/minimal-net/contiki-main.c
@@ -29,7 +29,7 @@
  *
  * This file is part of the Contiki OS
  *
- * $Id: contiki-main.c,v 1.11 2007/11/26 23:28:33 adamdunkels Exp $
+ * $Id: contiki-main.c,v 1.12 2007/11/28 12:54:41 adamdunkels Exp $
  *
  */
 
@@ -78,16 +78,16 @@ main(void)
 
   while(1) {
     int n;
-    struct timespec ts;
+    struct timeval tv;
     
     n = process_run();
     /*    if(n > 0) {
       printf("%d processes in queue\n");
       }*/
 
-    ts.tv_sec = 0;
-    ts.tv_nsec = 1000;
-    nanosleep(&ts, NULL);
+    tv.tv_sec = 0;
+    tv.tv_usec = 1;
+    select(0, NULL, NULL, NULL, &tv);
     etimer_request_poll();
   }
   
diff --git a/platform/native/contiki-main.c b/platform/native/contiki-main.c
index 0130ef641..4a8e38404 100644
--- a/platform/native/contiki-main.c
+++ b/platform/native/contiki-main.c
@@ -29,12 +29,12 @@
  *
  * This file is part of the Contiki OS
  *
- * $Id: contiki-main.c,v 1.5 2007/11/26 23:28:33 adamdunkels Exp $
+ * $Id: contiki-main.c,v 1.6 2007/11/28 12:54:42 adamdunkels Exp $
  *
  */
 
 #include <stdio.h>
-#include <time.h>
+#include <sys/select.h>
 
 #include "contiki.h"
 
@@ -73,12 +73,12 @@ main(void)
   
   while(1) {
     int n;
-    struct timespec ts;
+    struct timeval tv;
     
     n = process_run();
-    ts.tv_sec = 0;
-    ts.tv_nsec = 1000;
-    nanosleep(&ts, NULL);
+    tv.tv_sec = 0;
+    tv.tv_usec = 1;
+    select(0, NULL, NULL, NULL, &tv);
     etimer_request_poll();
   }
   
diff --git a/platform/netsim/contiki-main.c b/platform/netsim/contiki-main.c
index 6a91e2b40..12bdc0a29 100644
--- a/platform/netsim/contiki-main.c
+++ b/platform/netsim/contiki-main.c
@@ -30,7 +30,7 @@
  *
  * Author: Adam Dunkels <adam@sics.se>
  *
- * $Id: contiki-main.c,v 1.20 2007/11/26 23:28:33 adamdunkels Exp $
+ * $Id: contiki-main.c,v 1.21 2007/11/28 12:54:42 adamdunkels Exp $
  */
 
 #include "contiki.h"
@@ -55,7 +55,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-#include <time.h>
+#include <sys/select.h>
 #include <unistd.h>
 
 #include "dev/button-sensor.h"
@@ -125,15 +125,15 @@ contiki_main(int flag)
   
   while(1) {
     int n;
-    struct timespec ts;
+    struct timeval tv;
 
     n = process_run();
     /*    if(n > 0) {
       printf("%d processes in queue\n");
       }*/
-    ts.tv_sec = 0;
-    ts.tv_nsec = 1000;
-    nanosleep(&ts, NULL);
+    tv.tv_sec = 0;
+    tv.tv_usec = 1;
+    select(0, NULL, NULL, NULL, &tv);
     etimer_request_poll();
   }
 
diff --git a/platform/netsim/main.c b/platform/netsim/main.c
index 6489feb1b..7492b2445 100644
--- a/platform/netsim/main.c
+++ b/platform/netsim/main.c
@@ -30,7 +30,7 @@
  *
  * Author: Adam Dunkels <adam@sics.se>
  *
- * $Id: main.c,v 1.7 2007/11/26 23:28:33 adamdunkels Exp $
+ * $Id: main.c,v 1.8 2007/11/28 12:54:42 adamdunkels Exp $
  */
 
 /**
@@ -111,7 +111,7 @@ static int
 start_node(int x, int y, int b)
 {
   pid_t pid;
-  struct timespec ts;
+  struct timeval tv;
   static unsigned short port = NODES_PORTBASE;
   
   pid = fork();
@@ -123,9 +123,9 @@ start_node(int x, int y, int b)
     
     srand(getpid());
 
-    ts.tv_sec = 0;
-    ts.tv_nsec = 1000000 * (rand() % 1000);
-    nanosleep(&ts, NULL);
+    tv.tv_sec = 0;
+    tv.tv_usec = 1000 * (rand() % 1000);
+    select(0, NULL, NULL, NULL, &tv);
     
     node_init(port - NODES_PORTBASE + 2, x, y, b);
     ethernode_init(port);
@@ -213,10 +213,10 @@ static signed long drift = 0;
 void
 clock_delay(unsigned int num)
 {
-  struct timespec ts;
-  ts.tv_sec = 0;
-  ts.tv_nsec = 100000 * num;
-  nanosleep(&ts, NULL);
+  struct timeval tv;
+  tv.tv_sec = 0;
+  tv.tv_usec = 100 * num;
+  select(0, NULL, NULL, NULL, &tv);
 }
 
 void
diff --git a/platform/netsim/net/ethernode.c b/platform/netsim/net/ethernode.c
index d0947fa53..b512f6d0d 100644
--- a/platform/netsim/net/ethernode.c
+++ b/platform/netsim/net/ethernode.c
@@ -30,7 +30,7 @@
  *
  * Author: Adam Dunkels <adam@sics.se>
  *
- * $Id: ethernode.c,v 1.12 2007/11/27 20:45:15 nvt-se Exp $
+ * $Id: ethernode.c,v 1.13 2007/11/28 12:54:42 adamdunkels Exp $
  */
 /**
  * \file
@@ -51,7 +51,7 @@
 #include "lib/random.h"
 
 #include <stdio.h>
-#include <time.h>
+#include <sys/select.h>
 #include <unistd.h>
 
 #define BUF ((uip_tcpip_hdr *)&uip_buf[HDR_LEN])
@@ -198,7 +198,7 @@ ethernode_send(void)
   static char tmpbuf[2048];
   struct hdr *hdr = (struct hdr *)tmpbuf;
   u8_t dest;
-  struct timespec ts;
+  struct timeval tv;
 
   if(uip_len > sizeof(tmpbuf)) {
     PRINTF(("Ethernode_send: too large uip_len %d\n", uip_len));
@@ -209,9 +209,9 @@ ethernode_send(void)
   len = uip_len + HDR_LEN;
 
   dest = ID_BROADCAST;
-  ts.tv_sec = 0;
-  ts.tv_nsec = 1000 * (random_rand() % 1000);
-  nanosleep(&ts, NULL);
+  tv.tv_sec = 0;
+  tv.tv_usec = (random_rand() % 1000);
+  select(0, NULL, NULL, NULL, &tv);
 
   do_send(TYPE_DATA, dest, hdr, len);