Restoring Entire System to Earlier Backup with Leopard CPU Drop-in DVD

After some programs failed in a pernicious manner, I decided to return the entire system to a Time Machine backup made earlier today. Time Machine Help "Recovering your Entire system" seems to be the only relevant help. It says to choose Utilities > Restore System from my Mac OS X Install disc. But I was shipped two Tiger Mac OS X Install Discs and a Leopard CPU Drop-in DVD (updates to Leopard). The Leopard Drop-in does not have Utilities > Restore System and I am reluctant to use either Tiger disc to restore my Leopard system.
What should I be doing? I hope the answer provides a restore process that is relatively quick because the changes are relatively small.
Message was edited by: Butterflie14

Butterflie14,
The term "delta" doesn't really apply to Time Machine backups. Each backup is a complete "snapshot" of the entire installation. In order to do this without copying over huge amounts of data, Time Machine uses "multi-linked" files in the various backups, all pointing to the same data. That is, with the exception of any new/changed files; these represent the only real data that is transferred during each backup. Only in this sense does "delta" apply.
Restoring from a backup, at least in the context of "going back to a previous state," is an all-or-nothing proposition. That doesn't mean it has to take a long time. First, the process of erasing a drive takes mere seconds. Second, a Time Machine "Restore" doesn't include a new installation of OS X from the installer disk (which would take a long time), but rather a restoration of the entire system from the backup. As such, it is dependent entirely on the speed of the drive and connecting bus (FW 400, 800, USB, etc.). In the case of my FW 800 drive, a complete "Restore" of a 50 GB system took about 30 minutes.
I agree, to take this step seems like a waste just to recover from some "pernicious" action of a particular application. If you were a bit more specific about what application we're talking about, and just what it did, perhaps I could offer better advice. You can restore anything that has been backed up by Time Machine, but may have been deleted from your internal disk in the meantime, but you cannot really "un-modify" OS X, if that is what has happened. To do so, you must perform a complete "Restore."
Scott

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