diff --git a/DRAMSys/simulator/src/error/errormodel.cpp b/DRAMSys/simulator/src/error/errormodel.cpp
index 477adfbb..1fe29ccb 100644
--- a/DRAMSys/simulator/src/error/errormodel.cpp
+++ b/DRAMSys/simulator/src/error/errormodel.cpp
@@ -231,24 +231,28 @@ void errorModel::markBitFlips()
 {
     for(unsigned int row = 0; row < Configuration::getInstance().memSpec.NumberOfRows; row++)
     {
-        // Get the time interval between now and the last acivate/refresh
-        sc_time interval = sc_time_stamp() - lastRowAccess[row];
-
-        // Obtain the number of bit flips for the current temperature and the time interval:
-        unsigned int n = getNumberOfFlips(temperature, interval);
-
-        // Check if the current row is in the range of bit flips for this interval
-        // and temperature, if yes mark it as flipped:
-        for (unsigned int i=0; i<n; i++)
+        // If the row has never been accessed ignore it and go to the next one
+        if (lastRowAccess[row] != SC_ZERO_TIME)
         {
-            // Check if Bit has marked as flipped yet, if yes mark it as flipped
-            if(weakCells[i].flipped == false && weakCells[i].row == row)
-            {
-                std::stringstream msg;
-                msg << "Maked weakCell[" << i << "] as flipped" << std::endl;
-                DebugManager::getInstance().printDebugMessage(name, msg.str());
+            // Get the time interval between now and the last acivate/refresh
+            sc_time interval = sc_time_stamp() - lastRowAccess[row];
 
-                weakCells[i].flipped = true;
+            // Obtain the number of bit flips for the current temperature and the time interval:
+            unsigned int n = getNumberOfFlips(temperature, interval);
+
+            // Check if the current row is in the range of bit flips for this interval
+            // and temperature, if yes mark it as flipped:
+            for (unsigned int i=0; i<n; i++)
+            {
+                // Check if Bit has marked as flipped yet, if yes mark it as flipped
+                if(weakCells[i].flipped == false && weakCells[i].row == row)
+                {
+                    std::stringstream msg;
+                    msg << "Maked weakCell[" << i << "] as flipped" << std::endl;
+                    DebugManager::getInstance().printDebugMessage(name, msg.str());
+
+                    weakCells[i].flipped = true;
+                }
             }
         }
     }
diff --git a/DRAMSys/tests/start.pl b/DRAMSys/tests/start.pl
index ee88031f..43ff397f 100755
--- a/DRAMSys/tests/start.pl
+++ b/DRAMSys/tests/start.pl
@@ -31,11 +31,15 @@
 # 
 # Authors:
 #    Matthias Jung
+#    Eder F. Zulian
 #
 
 use warnings;
 use strict;
 use Term::ANSIColor;
+use Time::localtime;
+
+my $timestamp_color = "green";
 
 print color("red"),"  |||\n";
 print color("red")," +---+   Microelectronic Systems\n";
@@ -53,18 +57,20 @@ chdir("../../");
 chdir("build/");
 
 # Build the Project:
-print color("reset"),"\nBuild Project\t";
+my $starttime = time();
+print "\n", color($timestamp_color), timestamp(), color("reset"),"Build Project\t";
 `qmake ../DRAMSys/dram.vp.system.pro >/dev/null 2>&1`;
 `make -j$numberOfCores > /dev/null 2>&1`;
+my $took = time() - $starttime;
 
 # Check if Build was sucessful:
 if( -e "./simulator/dramSys" )
 {
-    print color("reset"),"[ ", color("green"), "done", color("reset"), " ]\n";
+    print color("reset"),"[ ", color("green"), "done", color("reset"), " ]\t", "(", $took, " seconds)\n";
 }
 else
 {
-    print color("reset"),"[ ", color("red"), "fail", color("reset"), " ]\n";
+    print color("reset"),"[ ", color("red"), "fail", color("reset"), " ]\t", "(", $took, " seconds)\n";
     exit -1;
 }
 
@@ -80,16 +86,18 @@ foreach(@tests)
     {
         my $name = $1;
         chdir("./$name");
-        print color("reset"),"Test: ".$name."\t";
+        print color($timestamp_color), timestamp(), color("reset"),"Test: ".$name."\t";
+        $starttime = time();
         `perl test.pl`;
+        $took = time() - $starttime;
 
         if( $? == 0 )
         {
-            print color("reset"),"[ ", color("green"), "done", color("reset"), " ]\n";
+            print color("reset"),"[ ", color("green"), "done", color("reset"), " ]\t", "(", $took, " seconds)\n";
         }
         else
         {
-            print color("reset"),"[ ", color("red"), "fail", color("reset"), " ]\n";
+            print color("reset"),"[ ", color("red"), "fail", color("reset"), " ]\t", "(", $took, " seconds)\n";
         }
         chdir("../");
     }
@@ -98,3 +106,11 @@ foreach(@tests)
         exit -1;
     }
 }
+
+sub timestamp {
+  my $t = localtime;
+  return sprintf( "[%04d-%02d-%02d %02d:%02d:%02d]\t",
+                  $t->year + 1900, $t->mon + 1, $t->mday,
+                  $t->hour, $t->min, $t->sec );
+}
+