Fast Mode, many Files..

Hi
I use fast mode because many files (200 k).
i program syncback to re scan every day Number 7.

some times, when i am looking : i see Syncback is sending all the files...
i stop it, ordre a re scan and that's fine... only modified files are programmed to be saved.

it seems like if the database who contain' right directory was corrupted ....

it's with windows XP or 2008 server.

i wonder if it's when a profil is not ended and a new one, with task scheduler is starting a new one...

maybe kill the process for a best security ?

if somebody has a idea.

thanks a lot

philippe