I see many posts here from people saying that they have installed the 10.5.7 combo pack to prevent problems - is this just urban myth along the same lines as people repairing permissions seemingly any time anything happens? eg "My screen is cracked" ..... "hmm, have you tried repairing permissions"??
I'd have thought all the combo pack install would do would be to install the appropriate upgrade for your level, so that if you are already on 10.5.6 it would be exactly the same as the upgrade purely for a system on 10.5.6 , and all you have done is pointlessly download a few hundred extra gig, or is something more complex going on and it reinstalls everything again from a base image of 10.5.0 or whatever the first 10.5 release was, overwriting stuff that's already there? Otherwise I can't see why there would be any difference in results.
I'd have thought all the combo pack install would do would be to install the appropriate upgrade for your level, so that if you are already on 10.5.6 it would be exactly the same as the upgrade purely for a system on 10.5.6 , and all you have done is pointlessly download a few hundred extra gig, or is something more complex going on and it reinstalls everything again from a base image of 10.5.0 or whatever the first 10.5 release was, overwriting stuff that's already there? Otherwise I can't see why there would be any difference in results.