diff --git a/NSTimeZones/NSTimeZones.tar b/NSTimeZones/NSTimeZones.tar
index 2e0df8bb7..6633d5cd0 100644
Binary files a/NSTimeZones/NSTimeZones.tar and b/NSTimeZones/NSTimeZones.tar differ
diff --git a/Source/Additions/NSObject+GNUstepBase.m b/Source/Additions/NSObject+GNUstepBase.m
index 05753a705..590e6a473 100644
--- a/Source/Additions/NSObject+GNUstepBase.m
+++ b/Source/Additions/NSObject+GNUstepBase.m
@@ -541,8 +541,8 @@ + (BOOL) shouldCleanUp
     }
   GS_MUTEX_UNLOCK(trackLock);
   fprintf(stderr, "Tracking ownership - unable to find entry for"
-    " instance %p of '%s'\n", o, class_getName(c));
-  NSLog(@"Tracking ownership %p problem at %s",
+    " instance %p of '%s'.\n", o, class_getName(c));
+  fprintf(stderr, "Tracking ownership %p problem at %s.\n",
     o, stackTrace(1));
 
   /* Should never happen because we don't remove class entries, but I suppose
@@ -598,7 +598,7 @@ - (void) _replacementDealloc
             }
         }
       GS_MUTEX_UNLOCK(trackLock);
-      NSLog(@"Tracking ownership -[%p dealloc] at %s",
+      fprintf(stderr, "Tracking ownership -[%p dealloc] at %s.\n",
         self, stackTrace(2));
       (*dealloc)(self, _cmd);
     }
@@ -620,7 +620,7 @@ - (void) _replacementRelease
       unsigned		rc;
 
       rc = (unsigned)[self retainCount];
-      NSLog(@"Tracking ownership -[%p release] %u->%u at %s",
+      fprintf(stderr, "Tracking ownership -[%p release] %u->%u at %s.\n",
         self, rc, rc-1, stackTrace(2));
       (*release)(self, _cmd);
     }
@@ -644,7 +644,7 @@ - (id) _replacementRetain
 
       rc = (unsigned)[self retainCount];
       result = (*retain)(self, _cmd);
-      NSLog(@"Tracking ownership -[%p retain] %u->%u at %s",
+      fprintf(stderr, "Tracking ownership -[%p retain] %u->%u at %s.\n",
         self, rc, (unsigned)[self retainCount], stackTrace(2));
     }
   return result;
@@ -755,7 +755,7 @@ + (void) trackOwnership
   l->next = tracked;
   tracked = l;
   GS_MUTEX_UNLOCK(trackLock);
-  NSLog(@"Tracking ownership started for class %p at %s",
+  fprintf(stderr, "Tracking ownership started for class %p at %s.\n",
     self, stackTrace(1));
 }
 
@@ -823,7 +823,7 @@ - (void) trackOwnership
   li->next = tracked;
   tracked = li;
   GS_MUTEX_UNLOCK(trackLock);
-  NSLog(@"Tracking ownership started for instance %p at %s",
+  fprintf(stderr, "Tracking ownership started for instance %p at %s.\n",
     self, stackTrace(1));
 }
 
diff --git a/Source/NSPropertyList.m b/Source/NSPropertyList.m
index 43b31cfcb..3d418d92e 100644
--- a/Source/NSPropertyList.m
+++ b/Source/NSPropertyList.m
@@ -2379,30 +2379,46 @@ @implementation	NSPropertyListSerialization
 
 + (void) initialize
 {
-  if (classInitialized == NO)
-    {
-      NSMutableCharacterSet	*s;
+  NSMutableCharacterSet	*s;
 
-      classInitialized = YES;
-
-      NSStringClass = [NSString class];
-      NSMutableStringClass = [NSMutableString class];
-      NSDataClass = [NSData class];
-      NSDateClass = [NSDate class];
-      NSNumberClass = [NSNumber class];
-      NSArrayClass = [NSArray class];
-      NSDictionaryClass = [NSDictionary class];
-      GSStringClass = [GSString class];
-      GSMutableStringClass = [GSMutableString class];
+  if (Nil == NSStringClass) NSStringClass = [NSString class];
+  if (Nil == GSStringClass) GSStringClass = [GSString class];
+  if (Nil == NSMutableStringClass)
+    NSMutableStringClass = [NSMutableString class];
+  if (Nil == GSMutableStringClass)
+    GSMutableStringClass = [GSMutableString class];
 
+  if (Nil == NSArrayClass) NSArrayClass = [NSArray class];
+  if (Nil == plArray)
+    {
       plArray = [GSMutableArray class];
       plAdd = (id (*)(id, SEL, id))
 	[plArray instanceMethodForSelector: @selector(addObject:)];
+    }
 
+  if (Nil == NSDictionaryClass) NSDictionaryClass = [NSDictionary class];
+  if (Nil == plDictionary)
+    {
       plDictionary = [GSMutableDictionary class];
       plSet = (id (*)(id, SEL, id, id))
 	[plDictionary instanceMethodForSelector: @selector(setObject:forKey:)];
+    }
+
+  if (Nil == NSDataClass) NSDataClass = [NSData class];
+  if (Nil == NSNumberClass) NSNumberClass = [NSNumber class];
+  if (nil == boolN)
+    {
+      boolN = [[NSNumber numberWithBool: NO] retain];
+      [[NSObject leakAt: &boolN] release];
+    }
+  if (nil == boolY)
+    {
+      boolY = [[NSNumber numberWithBool: YES] retain];
+      [[NSObject leakAt: &boolY] release];
+    }
 
+  if (nil == oldQuotables)
+    {
       /* The '$', '.', '/' and '_' characters used to be OK to use in
        * property lists, but OSX now quotes them, so we follow suite.
        */
@@ -2413,7 +2429,10 @@ + (void) initialize
       [s invert];
       oldQuotables = s;
       [[NSObject leakAt: &oldQuotables] release];
+    }
 
+  if (nil == xmlQuotables)
+    {
       s = [NSMutableCharacterSet new];
       [s addCharactersInString: @"&<>'\\\""];
       [s addCharactersInRange: NSMakeRange(0x0001, 0x001f)];
@@ -2423,13 +2442,17 @@ + (void) initialize
       [s addCharactersInRange: NSMakeRange(0xFFFE, 0x0002)];
       xmlQuotables = s;
       [[NSObject leakAt: &xmlQuotables] release];
+    }
 
-      boolN = [[NSNumber numberWithBool: NO] retain];
-      [[NSObject leakAt: &boolN] release];
-
-      boolY = [[NSNumber numberWithBool: YES] retain];
-      [[NSObject leakAt: &boolY] release];
+  /* Initialize the date class last as it has external dependencies on
+   * time zone data.
+   */
+  if (Nil == NSDateClass)
+    {
+      NSDateClass = [NSDate class];
     }
+
+  classInitialized = YES;
 }
 
 + (NSData*) dataFromPropertyList: (id)aPropertyList
diff --git a/Source/NSTimeZone.m b/Source/NSTimeZone.m
index b509a9c78..6eea6fd01 100644
--- a/Source/NSTimeZone.m
+++ b/Source/NSTimeZone.m
@@ -1288,7 +1288,6 @@ + (void) atExit
   GS_MUTEX_UNLOCK(zone_mutex);
 
   DESTROY(zoneDictionary);
-  DESTROY(localTimeZone);
   DESTROY(defaultTimeZone);
   DESTROY(systemTimeZone);
   DESTROY(abbreviationDictionary);
@@ -1346,6 +1345,10 @@ + (void) initialize
       absolutes = NSCreateMapTable(NSIntegerMapKeyCallBacks,
 	NSNonOwnedPointerMapValueCallBacks, 0);
 
+      /* NB. the instance of NSLocalTimeZone overrides memory management
+       * so it is never deallocated.  This must not be destroyed in the
+       * +atExit: method becuse that would confuse leak analysis tools.
+       */
       localTimeZone = [[NSLocalTimeZone alloc] init];
 
       [[NSNotificationCenter defaultCenter] addObserver: self