diff --git a/examples/rpl_udp/demo.h b/examples/rpl_udp/demo.h
index dff1e93e2d..2b831011b4 100644
--- a/examples/rpl_udp/demo.h
+++ b/examples/rpl_udp/demo.h
@@ -16,47 +16,47 @@
  *
  * @param[in] str  Shell input
  */
-void init(char *str);
+void rpl_udp_init(char *str);
 
 /**
  * @brief   Shell command to set node's ID
  *
  * @param[in] str  Shell input
  */
-void set_id(char *id);
+void rpl_udp_set_id(char *id);
 
 /**
  * @brief   Loops through the routing table
  *
  * @param[in] unused  Guess what
  */
-void loop(char *unused);
+void rpl_udp_loop(char *unused);
 
 /**
  * @brief   Shows the routing table
  *
  * @param[in] unused  Guess what
  */
-void table(char *unused);
+void rpl_udp_table(char *unused);
 
 /**
  * @brief   Shows the dodag 
  *
  * @param[in] unused  Guess what
  */
-void dodag(char *unused);
+void rpl_udp_dodag(char *unused);
 
 /* UDP shell command handlers */
 void udp_server(char *unused);
 void udp_send(char *str);
 
 /* helper command handlers */
-void ip(char *unused);
+void rpl_udp_ip(char *unused);
 
-void ignore(char *addr);
+void rpl_udp_ignore(char *addr);
 
 /* monitoring thread */
-void monitor(void);
+void rpl_udp_monitor(void);
 
 extern radio_address_t id;
 extern ipv6_addr_t std_addr;
diff --git a/examples/rpl_udp/helper.c b/examples/rpl_udp/helper.c
index e055c2abc8..e1b3e92ccc 100644
--- a/examples/rpl_udp/helper.c
+++ b/examples/rpl_udp/helper.c
@@ -20,13 +20,13 @@ extern uint8_t ipv6_ext_hdr_len;
 msg_t msg_q[RCV_BUFFER_SIZE];
 
 /* prints current IPv6 adresses */
-void ip(char *unused)
+void rpl_udp_ip(char *unused)
 {
     (void) unused;
     ipv6_iface_print_addrs();
 }
 
-void set_id(char *id_str)
+void rpl_udp_set_id(char *id_str)
 {
     int res = sscanf(id_str, "set %hu", &id);
 
@@ -40,7 +40,7 @@ void set_id(char *id_str)
     printf("Set node ID to %u\n", id);
 }
 
-void monitor(void)
+void rpl_udp_monitor(void)
 {
     msg_t m;
     radio_packet_t *p;
@@ -70,7 +70,7 @@ void monitor(void)
         }
         else if (m.type == IPV6_PACKET_RECEIVED) {
             ipv6_buf = (ipv6_hdr_t*) m.content.ptr;
-            printf("IPv& datagram received (next header: %02X)", ipv6_buf->nextheader); 
+            printf("IPv6 datagram received (next header: %02X)", ipv6_buf->nextheader);
             printf(" from %s ", ipv6_addr_to_str(addr_str, &ipv6_buf->srcaddr));
             if (ipv6_buf->nextheader == IPV6_PROTO_NUM_ICMPV6) {
                 icmpv6_buf = (icmpv6_hdr_t*) &ipv6_buf[(LL_HDR_LEN + IPV6_HDR_LEN) + ipv6_ext_hdr_len];
@@ -95,7 +95,7 @@ void monitor(void)
 
 transceiver_command_t tcmd;
 
-void ignore(char *addr) {
+void rpl_udp_ignore(char *addr) {
     uint16_t a;
     if (transceiver_pid < 0) {
         puts("Transceiver not runnning.");
diff --git a/examples/rpl_udp/main.c b/examples/rpl_udp/main.c
index 641abd6942..c276e49ecd 100644
--- a/examples/rpl_udp/main.c
+++ b/examples/rpl_udp/main.c
@@ -10,15 +10,15 @@
 #include "demo.h"
 
 const shell_command_t shell_commands[] = {
-    {"init", "Initialize network", init},
-    {"set", "Set ID", set_id},
-    {"table", "", table},
-    {"dodag", "", dodag},
-    {"loop", "", loop},
+    {"init", "Initialize network", rpl_udp_init},
+    {"set", "Set ID", rpl_udp_set_id},
+    {"table", "Shows the routing table", rpl_udp_table},
+    {"dodag", "Shows the dodag", rpl_udp_dodag},
+    {"loop", "", rpl_udp_loop},
     {"server", "Starts a UDP server", udp_server},
     {"send", "Send a UDP datagram", udp_send},
-    {"ip", "Print all assigned IP addresses", ip},
-    {"ign", "ignore node", ignore},
+    {"ip", "Print all assigned IP addresses", rpl_udp_ip},
+    {"ign", "ignore node", rpl_udp_ignore},
     {NULL, NULL, NULL}
 };
 
diff --git a/examples/rpl_udp/rpl.c b/examples/rpl_udp/rpl.c
index e9f2f7e216..a956d4b9ab 100644
--- a/examples/rpl_udp/rpl.c
+++ b/examples/rpl_udp/rpl.c
@@ -20,21 +20,21 @@ ipv6_addr_t std_addr;
 
 uint8_t is_root = 0;
 
-void init(char *str)
+void rpl_udp_init(char *str)
 {
     transceiver_command_t tcmd;
     msg_t m;
     uint8_t chan = RADIO_CHANNEL;
 
-    char command;
-
-    int res = sscanf(str, "init %c", &command);
-
-    if (res < 1) {
+    char *toc_str = strtok(str, " ");
+    toc_str = strtok(NULL, " ");
+    if (!toc_str) {
         printf("Usage: init (r|n)\n");
         printf("\tr\tinitialize as root\n");
         printf("\tn\tinitialize as node router\n");
+        return;
     }
+    char command = *toc_str;
 
     uint8_t state;
 
@@ -61,7 +61,7 @@ void init(char *str)
         else {
             ipv6_iface_set_routing_provider(rpl_get_next_hop);
         }
-        int monitor_pid = thread_create(monitor_stack_buffer, MONITOR_STACK_SIZE, PRIORITY_MAIN-2, CREATE_STACKTEST, monitor, "monitor");
+        int monitor_pid = thread_create(monitor_stack_buffer, MONITOR_STACK_SIZE, PRIORITY_MAIN-2, CREATE_STACKTEST, rpl_udp_monitor, "monitor");
         transceiver_register(TRANSCEIVER, monitor_pid);
         ipv6_register_packet_handler(monitor_pid);
         //sixlowpan_lowpan_register(monitor_pid);
@@ -94,7 +94,7 @@ void init(char *str)
     /* start transceiver watchdog */
 }
 
-void loop(char *unused)
+void rpl_udp_loop(char *unused)
 {
     (void) unused;
 
@@ -135,7 +135,7 @@ void loop(char *unused)
     printf("########################\n");
 }
 
-void table(char *unused)
+void rpl_udp_table(char *unused)
 {
     (void) unused;
 
@@ -161,7 +161,7 @@ void table(char *unused)
     printf("$\n");
 }
 
-void dodag(char *unused)
+void rpl_udp_dodag(char *unused)
 {
     (void) unused;
 
@@ -170,7 +170,7 @@ void dodag(char *unused)
 
     if (mydodag == NULL) {
         printf("Not part of a dodag\n");
-        printf("---------------------------$\n");
+        printf("---------------------------\n");
         return;
     }
 
@@ -181,5 +181,5 @@ void dodag(char *unused)
         printf("my preferred parent:\n");
         printf("%s\n", ipv6_addr_to_str(addr_str, (&mydodag->my_preferred_parent->addr)));
     }
-    printf("---------------------------$\n");
+    printf("---------------------------\n");
 }
diff --git a/examples/rpl_udp/udp.c b/examples/rpl_udp/udp.c
index c6f9bb4bfb..bcbc83f322 100644
--- a/examples/rpl_udp/udp.c
+++ b/examples/rpl_udp/udp.c
@@ -25,7 +25,7 @@ void udp_server(char *unused)
 {
     (void) unused;
     int udp_server_thread_pid = thread_create(udp_server_stack_buffer, KERNEL_CONF_STACKSIZE_MAIN, PRIORITY_MAIN, CREATE_STACKTEST, init_udp_server, "init_udp_server");
-    printf("UDP SERVER THREAD PID: %i\n", udp_server_thread_pid);
+    printf("UDP SERVER ON PORT %d (THREAD PID: %d)\n", HTONS(SERVER_PORT), udp_server_thread_pid);
 }
 
 void init_udp_server(void)
diff --git a/sys/net/network_layer/sixlowpan/icmp.c b/sys/net/network_layer/sixlowpan/icmp.c
index faaac7fb64..99b5722ca7 100644
--- a/sys/net/network_layer/sixlowpan/icmp.c
+++ b/sys/net/network_layer/sixlowpan/icmp.c
@@ -1368,6 +1368,9 @@ uint8_t nbr_cache_add(ipv6_addr_t *ipaddr, ieee_802154_long_t *laddr,
                       ndp_nce_type_t type, uint16_t ltime,
                       ieee_802154_short_t *saddr)
 {
+    (void) ltime;
+    (void) saddr;
+
     if (nbr_count == NBR_CACHE_SIZE) {
         printf("ERROR: neighbor cache full\n");
         return NDP_OPT_ARO_STATE_NBR_CACHE_FULL;
diff --git a/sys/net/network_layer/sixlowpan/lowpan.c b/sys/net/network_layer/sixlowpan/lowpan.c
index e3faf88a30..30b254efc4 100644
--- a/sys/net/network_layer/sixlowpan/lowpan.c
+++ b/sys/net/network_layer/sixlowpan/lowpan.c
@@ -641,7 +641,7 @@ void check_timeout(void)
 
     while (temp_buf != NULL) {
         if ((timex_uint64(now) - timex_uint64(temp_buf->timestamp)) >= LOWPAN_REAS_BUF_TIMEOUT) {
-            printf("TIMEOUT!cur_time: %lu, temp_buf: %lu\n", timex_uint64(now),
+            printf("TIMEOUT!cur_time: %" PRIu64 ", temp_buf: %" PRIu64 "\n", timex_uint64(now),
                     timex_uint64(temp_buf->timestamp));
             temp_buf = collect_garbage(temp_buf);
         }
diff --git a/sys/net/transport_layer/destiny/destiny.c b/sys/net/transport_layer/destiny/destiny.c
index 3f434c8f29..906219b66c 100644
--- a/sys/net/transport_layer/destiny/destiny.c
+++ b/sys/net/transport_layer/destiny/destiny.c
@@ -36,7 +36,7 @@ char tcp_timer_stack[TCP_TIMER_STACKSIZE];
 
 int destiny_init_transport_layer(void)
 {
-    printf("Initializing transport layer packages. Size of socket_type: %u\n",
+    printf("Initializing transport layer packages. Size of socket_type: %zu\n",
            sizeof(socket_internal_t));
     /* SOCKETS */
     memset(sockets, 0, MAX_SOCKETS * sizeof(socket_internal_t));
diff --git a/sys/net/transport_layer/destiny/socket.c b/sys/net/transport_layer/destiny/socket.c
index f5937431cd..54edb69085 100644
--- a/sys/net/transport_layer/destiny/socket.c
+++ b/sys/net/transport_layer/destiny/socket.c
@@ -770,7 +770,7 @@ int32_t destiny_socket_send(int s, const void *buf, uint32_t len, int flags)
                 }
                 else {
                     memcpy(&send_buffer[IPV6_HDR_LEN + TCP_HDR_LEN],
-                           buf + total_sent_bytes, len - total_sent_bytes);
+                           (uint8_t *) buf + total_sent_bytes, len - total_sent_bytes);
                     sent_bytes = len - total_sent_bytes;
                     total_sent_bytes = len;
                 }
@@ -785,7 +785,7 @@ int32_t destiny_socket_send(int s, const void *buf, uint32_t len, int flags)
                 }
                 else {
                     memcpy(&send_buffer[IPV6_HDR_LEN + TCP_HDR_LEN],
-                           buf + total_sent_bytes, len - total_sent_bytes);
+                           (uint8_t *) buf + total_sent_bytes, len - total_sent_bytes);
                     sent_bytes = len - total_sent_bytes;
                     total_sent_bytes = len;
                 }
diff --git a/sys/net/transport_layer/destiny/tcp_timer.c b/sys/net/transport_layer/destiny/tcp_timer.c
index dc07474b15..d2da0b9d8f 100644
--- a/sys/net/transport_layer/destiny/tcp_timer.c
+++ b/sys/net/transport_layer/destiny/tcp_timer.c
@@ -149,8 +149,10 @@ void tcp_general_timer(void)
     while (1) {
         inc_global_variables();
         check_sockets();
-        vtimer_remove(&tcp_vtimer);
+
         vtimer_set_wakeup(&tcp_vtimer, interval, thread_getpid());
         thread_sleep();
+
+        vtimer_remove(&tcp_vtimer);
     }
 }