diff --git a/ChangeLog b/ChangeLog
index ccfc06202..e7c4c7ca5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2011-07-27  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
 
+	* OpenChange/MAPIStoreTable.m (-loggingPrefix): overriden method
+	in order to get more useful informations.
+
+	* OpenChange/MAPIStoreObject.m (-loggingPrefix): overriden method
+	in order to get more useful informations.
+
 	* OpenChange/MAPIStoreFSMessageTable.m
 	(-evaluatePropertyRestriction:intoQualifier:): overriden method to
 	handle PR_CHANGE_NUM, based on the messages version number.
diff --git a/OpenChange/MAPIStoreObject.m b/OpenChange/MAPIStoreObject.m
index f195d9893..90e0dd6fa 100644
--- a/OpenChange/MAPIStoreObject.m
+++ b/OpenChange/MAPIStoreObject.m
@@ -349,6 +349,8 @@ static Class NSExceptionK, MAPIStoreFolderK;
 {
   uint32_t lmTime;
 
+  [self logWithFormat: @"[" __location__ "] objectVersion computed from timestamp"];
+
   lmTime = (uint32_t) [[self lastModificationTime] timeIntervalSince1970];
   if (lmTime < 0x4dbb2dbe) /* oc_version_time */
     lmTime = 0x4dbb2dbe;
@@ -440,4 +442,11 @@ static Class NSExceptionK, MAPIStoreFolderK;
   return nil;
 }
 
+/* logging */
+- (NSString *) loggingPrefix
+{
+  return [NSString stringWithFormat:@"<%@:%p:%@>",
+                   NSStringFromClass(isa), self, [self nameInContainer]];
+}
+
 @end
diff --git a/OpenChange/MAPIStoreTable.m b/OpenChange/MAPIStoreTable.m
index 1b788fe99..d08901eb2 100644
--- a/OpenChange/MAPIStoreTable.m
+++ b/OpenChange/MAPIStoreTable.m
@@ -325,6 +325,7 @@ static Class NSDataK, NSStringK;
   [currentChild release];
   [childKeys release];
   [restrictedChildKeys release];
+  [sortOrderings release];
   [restriction release];
   [super dealloc];
 }
@@ -915,4 +916,12 @@ static Class NSDataK, NSStringK;
   [self subclassResponsibility: _cmd];
 }
 
+/* logging */
+- (NSString *) loggingPrefix
+{
+  return [NSString stringWithFormat:@"<%@:%p:%@>",
+                   NSStringFromClass (isa), self,
+                   [container nameInContainer]];
+}
+
 @end