Hello,
I'm seeing the same kind of problem. Here are the symptoms:
-Some or all data from a Mac previously running 10.3, is migrated to a Mac using 10.4. The Migration Assistant is used.
-Spotlight will continuously re-index, stop for a brief period, and repeat, either by itself, or when a search is attempted.
-Erasing the indices with mdutil -E, running fsck, fixing permissions and stopping/starting Spotlight doesn't resolve the problem.
-Excluding the migrated user directory will stop the madness. I.e., other users and shared directories like Applications, are searchable, and Spotlight will stop the continuous re-indexing.
-Recreating the user directory from scratch, and then copying in data from a backup, may once again start the madness.
The big question is, what, exactly, causes the indexing cycle?
The client affected by the problem is very disappointed, and had cause to wonder "how is this any better than Vista? I would have been better off with a Windows PC". I really need to resolve this, but I'm not sure of the best way to get Apple Tech involved with this bug.
Many Macs Mac OS X (10.4.8)