MySQL is really fast in storing things up, and it shouldn't count for majority of time used in full scan. In most ocations it takes less than 0.005s for a line to store. However, as far as I remember, Amarok uses MyISAM tables for collection (corret me if i'm wrong), that means tables gets locked during writes. Thisa could be asily fixed, by changing engine to InnoDB.<br>
<br>Even more, to minify count of writes, its is possible to feed a list of tracks after rescan to a temporary table stored on memory, and using joins delete removed tracks from mysql collection and add new ones. So even using MyISMA full rescan wouldn't couse much problem :)<br>