The support for multiple MCC card partitions & file systems is nice, but it seems to mess up the Tracker, at least for me it kept on indexing 'new' media files.
I have a dedicated Easy Debian partition on the internal mass memory disc.

Excluding the mount directories (/media/mmc1, mmc1p2 in my case) with Tracker Cfg did solve the problem, but I don't think that is the idea of CSSU.