diff --git a/CHANGELOG b/CHANGELOG
index e17fedf..ef642ca 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -5,6 +5,14 @@ Maui 3.3.1
   - Added build system changes to support Cygwin (Yauheni Charniauski, UIIP Minsk)
   - Added the --with-cygrunsrv configure option for start maui as Windows service (doesn't use a background daemon).
     Cygwin utility cygrunsrv.exe goes it into background independently (Igor Ilyenko, UIIP Minsk)
+  - changed all remaining mallocs to callocs which zeros memory on allocation.  Fixes a crash due 
+    to the way some whiel loops in MResAdjustDRes() expect things to be. (Jason Williams)
+  - Added proper memory allocation checks to accompany the callocs in MRes.c to avoid
+    missing memory errors. (Jason Williams)
+  - Added debug print messages to MUSNPrintF() and added a proper check of the return
+    code to vsnprintf to be in accordance with glibc >=2.1, if installed. (Jason Williams)
+  - Changed top-level Makefile BUILDROOT assignment to allow RPM builds (Jason Williams)
+  - Minor changes to fix a few valgrind errors about uninitialized values (Jason Williams)
 
 Maui 3.3
   - Fixed configure script. Was putting RMCFG[name] TYPE=PBS@RMNMHOST@.
diff --git a/src/moab/MUtil.c b/src/moab/MUtil.c
index c2f729f..8675502 100644
--- a/src/moab/MUtil.c
+++ b/src/moab/MUtil.c
@@ -5089,7 +5089,7 @@ int MUSNPrintF(
 
   {
   int len;
-
+  const char *FName = "MUSNPrintF";
   va_list Args;
 
   if ((BPtr == NULL) || 
@@ -5097,6 +5097,8 @@ int MUSNPrintF(
       (Format == NULL) || 
       (*BSpace <= 0))
     {
+	DBG(4,fCORE) DPrint("ALERT:    Memory Error in %s\n",
+	        FName);
     return(FAILURE);
     }
 
@@ -5108,9 +5110,23 @@ int MUSNPrintF(
 
   if (len <= 0)
     {
+	DBG(4,fCORE) DPrint("ALERT:    vsnprintf Error in %s\n",
+	        FName);
     return(FAILURE);
     }
 
+#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
+  /* XXX: The following is true for glibc > 2.1 */
+
+  /* if vsnprintf returns the same value as size or greater */
+  /* then the output is truncated. see man vsnprintf. */
+  if (len == *BSpace || len > *BSpace) {
+	  DBG(1,fCORE) DPrint("ALERT:    Possible vsnprintf truncation in %s\n",
+	  	        FName);
+	  return(FAILURE);
+  }
+#endif
+
   *BPtr += len;
   *BSpace -= len;