diff --git a/audio-mixer/src/main.cpp b/audio-mixer/src/main.cpp
index 5ab7f621df..c725637184 100644
--- a/audio-mixer/src/main.cpp
+++ b/audio-mixer/src/main.cpp
@@ -16,10 +16,14 @@
 #include <errno.h>
 #include <fstream>
 #include <limits>
+#include <signal.h>
+
 #include <AgentList.h>
 #include <AgentTypes.h>
 #include <SharedUtil.h>
 #include <StdDev.h>
+#include <Stacktrace.h>
+
 #include "AudioRingBuffer.h"
 #include "PacketHeaders.h"
 
@@ -71,8 +75,7 @@ void plateauAdditionOfSamples(int16_t &mixSample, int16_t sampleToAdd) {
     mixSample = normalizedSample;    
 }
 
-void *sendBuffer(void *args)
-{
+void *sendBuffer(void *args) {
     int sentBytes;
     int nextFrame = 0;
     timeval startTime;
@@ -255,11 +258,12 @@ void attachNewBufferToAgent(Agent *newAgent) {
     }
 }
 
-int main(int argc, const char * argv[])
-{
-    AgentList* agentList = AgentList::createInstance(AGENT_TYPE_AUDIO_MIXER, MIXER_LISTEN_PORT);
+int main(int argc, const char* argv[]) {
+    signal(SIGSEGV, printStacktrace);
     setvbuf(stdout, NULL, _IOLBF, 0);
     
+    AgentList* agentList = AgentList::createInstance(AGENT_TYPE_AUDIO_MIXER, MIXER_LISTEN_PORT);
+    
     ssize_t receivedBytes = 0;
     
     agentList->linkedDataCreateCallback = attachNewBufferToAgent;
diff --git a/domain-server/src/main.cpp b/domain-server/src/main.cpp
index 553484dfc7..753009ffa9 100644
--- a/domain-server/src/main.cpp
+++ b/domain-server/src/main.cpp
@@ -96,7 +96,8 @@ int main(int argc, const char * argv[])
     agentList->startSilentAgentRemovalThread();
     
     while (true) {
-        if (agentList->getAgentSocket().receive((sockaddr *)&agentPublicAddress, packetData, &receivedBytes)) {
+        if (agentList->getAgentSocket().receive((sockaddr *)&agentPublicAddress, packetData, &receivedBytes) &&
+            (packetData[0] == PACKET_HEADER_DOMAIN_RFD || packetData[0] == PACKET_HEADER_DOMAIN_LIST_REQUEST)) {
             std::map<char, Agent *> newestSoloAgents;
             
             agentType = packetData[1];
@@ -118,11 +119,6 @@ int main(int argc, const char * argv[])
                                            agentType,
                                            agentList->getLastAgentId())) {
                 agentList->increaseAgentId();
-            } else if (packetData[0] == PACKET_HEADER_DOMAIN_RFD) {
-                // if this is a previous agent, and they are re-reporting for duty
-                // then we need to update the first receive time
-                Agent* refreshedAgent = agentList->agentWithAddress((sockaddr*) &agentLocalAddress);
-                refreshedAgent->setWakeMicrostamp(usecTimestampNow());
             }
             
             currentBufferPos = broadcastPacket + 1;
@@ -146,8 +142,14 @@ int main(int argc, const char * argv[])
                         }
                     }
                 } else {
+                    double timeNow = usecTimestampNow();
                     // this is the agent, just update last receive to now
-                    agent->setLastHeardMicrostamp(usecTimestampNow());
+                    agent->setLastHeardMicrostamp(timeNow);
+                    
+                    if (packetData[0] == PACKET_HEADER_DOMAIN_RFD
+                        && memchr(SOLO_AGENT_TYPES, agentType, sizeof(SOLO_AGENT_TYPES))) {
+                            agent->setWakeMicrostamp(timeNow);
+                    }
                 }
             }
             
diff --git a/libraries/shared/src/Stacktrace.cpp b/libraries/shared/src/Stacktrace.cpp
new file mode 100644
index 0000000000..0e9b42f50d
--- /dev/null
+++ b/libraries/shared/src/Stacktrace.cpp
@@ -0,0 +1,28 @@
+//
+//  Stacktrace.cpp
+//  hifi
+//
+//  Created by Stephen Birarda on 5/6/13.
+//
+//
+
+#include <signal.h>
+#include <stdio.h>
+#include <execinfo.h>
+#include <cstdlib>
+
+#include "Stacktrace.h"
+
+const int NUMBER_OF_STACK_ENTRIES = 20;
+
+void printStacktrace(int signal) {
+    void* array[NUMBER_OF_STACK_ENTRIES];
+    
+    // get void*'s for all entries on the stack
+    size_t size = backtrace(array, NUMBER_OF_STACK_ENTRIES);
+    
+    // print out all the frames to stderr
+    fprintf(stderr, "Error: signal %d:\n", signal);
+    backtrace_symbols_fd(array, size, 2);
+    exit(1);
+}
\ No newline at end of file
diff --git a/libraries/shared/src/Stacktrace.h b/libraries/shared/src/Stacktrace.h
new file mode 100644
index 0000000000..c58422ea0c
--- /dev/null
+++ b/libraries/shared/src/Stacktrace.h
@@ -0,0 +1,16 @@
+//
+//  Stacktrace.h
+//  hifi
+//
+//  Created by Stephen Birarda on 5/6/13.
+//
+//
+
+#ifndef __hifi__Stacktrace__
+#define __hifi__Stacktrace__
+
+#include <iostream>
+
+void printStacktrace(int signal);
+
+#endif /* defined(__hifi__Stacktrace__) */