I have added .thunderbird folder to my Ubuntu One's folders to be synced. This is to protect my mails and my thunderbird's settings and plugins.

However, U1 constantly keeps messing up with my folders and a lot of .u1conflict files appear in various places in my .thunderbird folder. Some of them I see on my thunderbird application when I start it up.

Why is that? Can't I just select my home folders files to be uploaded and not synced? Or set U1, in case of conflicts, to leave the home folder structure and files as is.

PS: I have subscribed to U1 service and this is important to me.