diff --git a/src/log.c b/src/log.c
index b4a1cdc..4a01265 100644
--- a/src/log.c
+++ b/src/log.c
@@ -232,6 +232,11 @@ static void output_to_stderr(const char *label, va_list ap, char *file,
    if (!log_to_stderr) return;
 
    sts = gettimeofday(&tv, NULL);
+   if (sts != 0) {
+      tv.tv_sec=0;
+      tv.tv_usec=0;
+   }
+
    tim = localtime(&(tv.tv_sec));
    fprintf(stderr, "%2.2i:%2.2i:%2.2i.%3.3i %s%s:%i ", 
            tim->tm_hour, tim->tm_min, tim->tm_sec, 
@@ -267,6 +272,10 @@ static void output_to_TCP(const char *label, va_list ap, char *file,
    if (debug_fd <= 0) return;
 
    sts = gettimeofday(&tv, NULL);
+   if (sts != 0) {
+      tv.tv_sec=0;
+      tv.tv_usec=0;
+   }
    tim = localtime(&(tv.tv_sec));
    snprintf(outbuf, sizeof(outbuf), "%2.2i:%2.2i:%2.2i.%3.3i %s%s:%i ",
             tim->tm_hour, tim->tm_min, tim->tm_sec, 
@@ -374,6 +383,9 @@ void log_dump_buffer(unsigned int class, char *file, int line,
    if (debug_fd > 0) {
       snprintf(outbuf, sizeof(outbuf) ,"---BUFFER DUMP follows---\n");
       sts=write(debug_fd, outbuf, strlen(outbuf));
+      if (sts < 0) {
+         ERROR("write returned error [%i:%s]",errno, strerror(errno));
+      }
    }
 
    for (i=0; i<length; i+=16) {
@@ -392,6 +404,9 @@ void log_dump_buffer(unsigned int class, char *file, int line,
          snprintf(outbuf, sizeof(outbuf) ,"  %-47.47s %-16.16s\n",
                   tmplin1, tmplin2);
          sts=write(debug_fd, outbuf, strlen(outbuf));
+         if (sts < 0) {
+            ERROR("write returned error [%i:%s]",errno, strerror(errno));
+         }
       }
    }
 
@@ -402,6 +417,9 @@ void log_dump_buffer(unsigned int class, char *file, int line,
    if (debug_fd > 0) {
       snprintf(outbuf, sizeof(outbuf) ,"---end of BUFFER DUMP---\n");
       sts=write(debug_fd, outbuf, strlen(outbuf));
+      if (sts < 0) {
+         ERROR("write returned error [%i:%s]",errno, strerror(errno));
+      }
    }
    pthread_mutex_unlock(&log_mutex);
 
diff --git a/src/plugin_codecfilter.c b/src/plugin_codecfilter.c
index e65ce62..2d2a6f9 100644
--- a/src/plugin_codecfilter.c
+++ b/src/plugin_codecfilter.c
@@ -258,6 +258,9 @@ static int sdp_filter_codec(sdp_message_t *sdp) {
             // fetch the media type value (first number field in value)
             attr_mediatype=0;
             sts=sscanf(sdp_attr->a_att_value, "%i", &attr_mediatype);
+            if (sts == 0) {
+               DEBUGC(DBCLASS_PLUGIN, "parsing SDP attribute mediatype failed");
+            }
             DEBUGC(DBCLASS_PLUGIN, "     +--Attr field=%s, val=%s [MT=%i]", 
                    sdp_attr->a_att_field, sdp_attr->a_att_value, attr_mediatype);
 
diff --git a/src/register.c b/src/register.c
index d7de0ce..44219d1 100644
--- a/src/register.c
+++ b/src/register.c
@@ -55,9 +55,8 @@ extern int errno;
 void register_init(void) {
    FILE *stream;
    int sts, i;
-//   size_t len;
    char buff[128];
-   char *c;
+//   char *c;
 
    memset(urlmap, 0, sizeof(urlmap));
 
@@ -75,14 +74,14 @@ void register_init(void) {
          /* read the url table from file */
          DEBUGC(DBCLASS_REG,"loading registration table");
          for (i=0;i < URLMAP_SIZE; i++) {
-            c=fgets(buff, sizeof(buff), stream);
+            fgets(buff, sizeof(buff), stream);
             sts=sscanf(buff, "****:%i:%i", &urlmap[i].active, &urlmap[i].expires);
             if (sts == 0) break; /* format error */
             if (urlmap[i].active) {
                #define R(X) {\
                sts=osip_uri_init(&X); \
                if (sts == 0) { \
-                  c=fgets(buff, sizeof(buff), stream);\
+                  fgets(buff, sizeof(buff), stream);\
                   buff[sizeof(buff)-1]='\0';\
                   if (strchr(buff, 10)) *strchr(buff, 10)='\0';\
                   if (strchr(buff, 13)) *strchr(buff, 13)='\0';\
diff --git a/src/rtpproxy_relay.c b/src/rtpproxy_relay.c
index e86d9b2..f87dd99 100644
--- a/src/rtpproxy_relay.c
+++ b/src/rtpproxy_relay.c
@@ -1025,6 +1025,9 @@ static void rtpproxy_kill( void ) {
          sts = rtp_relay_stop_fwd(&cid, rtp_proxytable[i].direction,
                                   rtp_proxytable[i].media_stream_no,
                                   LOCK_FDSET);
+         if (sts != STS_SUCCESS) {
+            DEBUGC(DBCLASS_RTP,"rtp_relay_stop_fwd did return error");
+         }
       }
    }
    
diff --git a/src/sip_utils.c b/src/sip_utils.c
index 9051d8b..32fe13b 100644
--- a/src/sip_utils.c
+++ b/src/sip_utils.c
@@ -615,7 +615,6 @@ int sip_add_myvia (sip_ticket_t *ticket, int interface) {
  */
 int sip_del_myvia (sip_ticket_t *ticket) {
    osip_via_t *via;
-   int sts;
 
    DEBUGC(DBCLASS_PROXY,"deleting topmost VIA");
    via = osip_list_get (&(ticket->sipmsg->vias), 0);
@@ -630,7 +629,7 @@ int sip_del_myvia (sip_ticket_t *ticket) {
       return STS_FAILURE;
    }
 
-   sts = osip_list_remove(&(ticket->sipmsg->vias), 0);
+   osip_list_remove(&(ticket->sipmsg->vias), 0);
    osip_via_free (via);
    return STS_SUCCESS;
 }