rsync updating time on every file everytime

[Rich Stanton]

I'm running rsync 2.6.4 on debian stable ppc, backing up a couple of
home directories to a Netware filestore mounted through ncpfs.  My
command looks like this:

rsync -r -t --delete -i --modify-window=10 --exclude=/**/.*
--exclude=/xxx/ /home/xxxx /home/xxxx /mnt/xxxx

The backup works fine, except that everytime it's run all files are
listed as having their times modified like this:

.f..t.... shared/calculator.xls

I've checked the times on both source & destination & they look the same
to me, yet it always updates the time.  Any ideas why this is?