10.5.2, Screensaver Security, and Disk Utility

After installing the 10.5.2 software update, it is appropriate to use Disk Utility (DU) to repair permissions. I learned this from the fact that I had somehow lost the protection I had previously set up by requiring my password to wake up the computer from its screensaver mode. I checked my preferences and found them to continue to call for that form of security with the use of my screensaver. Because my preferred security settings were being ignored, I assumed I needed to repair permissions on my system files. When something isn't working as it should, then it's my understanding that in all likelihood permissions are out of kilter. The Software Update process somehow managed to alter some of my permissions, and again, as I understand it, this is a matter that should be suspected after any software installation.
So I ran Disk Utility to repair permissions.
With Leopard, Disk Utility's repair process runs differently from the way it did in Tiger.
Under Leopard, Disk Utility's repair permissions routine presents a funny user interface. At the outset of the repair process, it ain't exactly clear that anything is really happening even though the repairs are indeed underway.
First thing DU does when the repair process starts is show you a blue progress bar and words to the effect that the process will require about 1 minute more. Then that blue bar sits there doing nothing whatsoever in terms of measuring progress - until about five minutes have passed. During this 5 minute hiatus, DU is building its own permissions data base which it will subsequently use to do its repair work.
Once the permissions data base is constructed, DU's progress bar will suddenly come alive again to show about fifteen minutes longer to complete the repair process. That fifteen minute item changes rapidly from then on, with all repairs being completed in just about five minutes more. (DU took altogether about ten minutes to do its repair thing under Leopard on my computer.)
DU will show you a list of permission faults that it finds, with the ones it can fix, repaired. You may, according to Apple, safely ignore faults listed involving "SUID" or "ACL". (With 10.5.2, the "SUID" faults appear to have stopped showing up but the "ACL" faults continue to be presented on my computer.)
If you have any wonderment about Disk Utility being at work when it appears that it is hung up for about five minutes, then open your Activity Monitor (AM) and select the CPU column. You'll be able to watch DU's use of the CPU while it is building the permissions data base. When DU's CPU usage ceases, you'll find that your permissions have been repaired. You can keep both DU and AM windows open on your monitor if you wish to suffer along with this sort of discombobulation.
After repairing permissions, I rebooted to find my screensaver password once again being called for as it should.

Okay, just a little update.
I added the replica server to the "Authentication" search in the Directory Utility, right after the OD Master.
I have also added it to the search path in the Workgroup Manager on my 10.4.11 server, and authenticated. Sees it just fine.
Now, when I fake a failure of the Master, (IE, shut it down), it just hangs forever, and doesn't timeout and move on to the replica.
Am I missing something? Isn't this the point of a replica?
Help?
Thanks!

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