Sorry for the problems. Obviously we never want data loss to happen but sometimes it does, whether it’s error in the code or in the setup. Can you give me a link to the bug?
Thank you for the work you've done on ownCloud. It's a fantastic project and it would be my first choice for hosting as I self-host everything. But a client that is willing to delete files instead of syncing them is just not worth risking for me.
Links: http://forum.owncloud.org/viewtopic.php?f=14&t=3148 https://github.com/owncloud/mirall/issues/328