ubuntuone overwrites a newer version of a file or creates a conflict version

Binary package hint: ubuntuone-client

I am using Lucid with all the updates (as of May 4). Ubuntuone client version is 1.2.1-0ubuntu1.

I have been editing (using Emacs) a tex file. I do need to save it often and compile it often. At some point I took a few minutes break, leaving the file opened. When I returned, Emacs posted a message that another application changed the file on the disk and asked me if I wanted to upload that version instead of mine. Luckily I double checked and I realized that ubuntuone replaced my current version with a 10 minute old version. Apparently it has been a gap between me saving the file and u1 synchronizing it on the servers and on the server the old version of the file appeared newer that the current version. I saved over my current changes and after that u1 refused to upload the new version of the file. It created a conflict file and the server contains only the old version. It did not upload the latest version of the file and
 u1sdtool --waiting-c
reports that there is nothing on queue.

The result of
u1sdtool --status
is
State: QUEUE_MANAGER
    connection: With User With Network
    description: processing queues
    is_connected: True
    is_error: False
    is_online: True
    queues: IDLE

I tried this (write, save, and compile the tex file, wait a couple of minutes, make a few more changes, save and compile, and wait a few more minutes) with a couple of file and I always got a similar outcome. At one point u1 erased a file leaving only the conflict version (fortunately it was the right version).