Todd,
First I have assumed that you have made no recent changes to the TSM environment
eg. no new management class with a copy mode  of absolute.
Sounds very much to me that something has changed on the netware client. Perhaps
a new process or new software that is changing file attributes so that TSM is
deciding they need to be backed up
File modifications requiring a backup are :-

The date or time of the last modification is different.
The file size is different.
The file attributes, with the exception of archive, are different.
However, If only the file meta-data changes (such as access
permissions), but the file data does not change, TSM may back up
only the meta-data.
Additionally for netware changed trustee rights are also a file modification

Check with your netware admin whether this is occurring.
John




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