diff --git a/server/abstractport.cpp b/server/abstractport.cpp
index e186227..715d07d 100644
--- a/server/abstractport.cpp
+++ b/server/abstractport.cpp
@@ -138,6 +138,7 @@ void AbstractPort::updatePacketList()
 
 void AbstractPort::updatePacketListSequential()
 {
+    const int kMinLoopSize = 16;
     long    sec = 0; 
     long    nsec = 0;
 
@@ -189,6 +190,9 @@ void AbstractPort::updatePacketListSequential()
                 break;
             case OstProto::StreamControl::e_su_packets:
                 x = frameVariableCount;
+                n = 2;
+                while (x < kMinLoopSize) 
+                    x = frameVariableCount*n++;
                 n = streamList_[i]->numPackets() / x;
                 y = streamList_[i]->numPackets() % x;
                 burstSize = x + y;
diff --git a/server/pcapport.cpp b/server/pcapport.cpp
index d31291b..5850447 100644
--- a/server/pcapport.cpp
+++ b/server/pcapport.cpp
@@ -451,7 +451,7 @@ _restart:
                 {
                     long usecs = packetSequenceList_.at(i+k)->usecDelay_
                                     + overHead; 
-                    if (usecs) 
+                    if (usecs > 0) 
                     {
                         udelay(usecs);
                         overHead = 0;