When you use the Desktop FILR application...

1) Copy files from your local workstation into the FILR folders..
2) Let them sync up to the server.
3) Notice that the files will be synced up to the server, then in a few minutes they'll sync back down.
4) When they sync back down the timestamp of the files will have changed to the time when the initial sync took place. It does not preserve the original timestamp.

This is a big problem.

It looks to me like the FILR app corrupts the timestamp during the initial sync up to the server.. because the timestamp on the server is also that of approximately the same time that the sync took place.. The it appears that it thinks its a new / updated file, so it syncs the 'new' copy back down to the desktop app.