Since a few weeks I have the following problem with my provider Memotoo:
After a refresh-from-server I sync a few times, then suddenly an error 404
object not found occures. The status of the sync afterwards is 10400. The next
sync wants do do a slow-sync, since I have forbidden this it aborts. Then I
have do do a refresh-from-server again. After that I can sync a few times (with
data changes, the are always OK), and then the 404 error is here again.

Until somewhere in April this was never the case. I synced for months with
memotoo without this problem.

What is the cause? I use version 1.3.2 since months on Ubuntu 12.04.