diff --git a/ChangeLog b/ChangeLog
index 3e30dc54a..f592d101a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-01-27  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
+
+	* Tools/SOGoToolBackup.m (-fetchUserIDs): retain allUsers to avoid
+	a release between the pool rotation.
+
 2010-01-25  Francis Lachapelle  <flachapelle@inverse.ca>
 
 	* UI/WebServerResources/SchedulerUI.js
diff --git a/Tools/SOGoToolBackup.m b/Tools/SOGoToolBackup.m
index 3f36727c5..2b76824d6 100644
--- a/Tools/SOGoToolBackup.m
+++ b/Tools/SOGoToolBackup.m
@@ -137,7 +137,7 @@
     allUsers = [lm fetchUsersMatching: @"." inDomain: nil];
   else
     {
-      allUsers = [NSMutableArray array];
+      allUsers = [NSMutableArray new];
       for (count = 0; count < max; count++)
         {
 	  if (count > 0 && count%100 == 0)
@@ -153,6 +153,7 @@
           else
             NSLog (@"user '%@' unknown", user);
         }
+      [allUsers autorelease];
     }
 
   ASSIGN (userIDs, [allUsers objectsForKey: @"c_uid" notFoundMarker: nil]);