diff --git a/lib/shared_memory.cpp b/lib/shared_memory.cpp
index 0a9eed50..faa2387b 100644
--- a/lib/shared_memory.cpp
+++ b/lib/shared_memory.cpp
@@ -1105,6 +1105,7 @@ namespace IPC {
               if (hasCounter) {
                 myPage.mapped[offset] = 1;
                 *((uint32_t *)(myPage.mapped + 1 + offset + len - 4)) = getpid();
+                HIGH_MSG("sharedClient received ID %d", offsetOnPage/(payLen+1));
               }
               break;
             }
@@ -1127,8 +1128,6 @@ namespace IPC {
   ///\brief The deconstructor
   sharedClient::~sharedClient() {
     mySemaphore.close();
-
-
   }
 
   ///\brief Writes data to the shared data
@@ -1151,6 +1150,7 @@ namespace IPC {
     if (myPage.mapped) {
       semGuard tmpGuard(&mySemaphore);
       myPage.mapped[offsetOnPage] = 126;
+      HIGH_MSG("sharedClient finished ID %d", offsetOnPage/(payLen+1));
     }
   }
 
diff --git a/src/controller/controller_statistics.cpp b/src/controller/controller_statistics.cpp
index af9f8fcb..aee7925a 100644
--- a/src/controller/controller_statistics.cpp
+++ b/src/controller/controller_statistics.cpp
@@ -274,8 +274,12 @@ void Controller::statSession::update(unsigned long index, IPC::statExchange & da
   }
   long long currDown = getDown();
   long long currUp = getUp();
-  servUpBytes += currUp - prevUp;
-  servDownBytes += currDown - prevDown;
+  if (currUp - prevUp < 0 || currDown-prevDown < 0){
+    ERROR_MSG("Negative data usage! %lldu/%lldd (u%lld->%lld) in %s over %s, #%lu", currUp-prevUp, currDown-prevDown, prevUp, currUp, data.streamName().c_str(), data.connector().c_str(), index);
+  }else{
+    servUpBytes += currUp - prevUp;
+    servDownBytes += currDown - prevDown;
+  }
   if (currDown + currUp > COUNTABLE_BYTES){
     std::string streamName = data.streamName();
     if (prevUp + prevDown < COUNTABLE_BYTES){
diff --git a/src/output/output.cpp b/src/output/output.cpp
index 052e4fb8..55cf3c76 100644
--- a/src/output/output.cpp
+++ b/src/output/output.cpp
@@ -1300,7 +1300,7 @@ namespace Mist {
     if (now == lastStats && !force){return;}
     lastStats = now;
 
-    EXTREME_MSG("Writing stats: %s, %s, %lu", getConnectedHost().c_str(), streamName.c_str(), crc & 0xFFFFFFFFu);
+    HIGH_MSG("Writing stats: %s, %s, %lu, %llu, %llu", getConnectedHost().c_str(), streamName.c_str(), crc & 0xFFFFFFFFu, myConn.dataUp(), myConn.dataDown());
     if (statsPage.getData()){
       /*LTS-START*/
       if (!statsPage.isAlive()){