Ubuntuone isn't syncronizing my files

I'm not certainly if this is the correct package, but my problem is ubuntuone isn't syncronizing my files.

I don't know how this happens. It's difficult to see, but already happened 3 or 4 times at last year, but with some important files. An example:

folder
    - file1.txt
    - file2.jpg

Ubuntuone stops synchronizing folder. Now I add file3.png at folder and the sync does not happens.
Another time, I'm was using an unstable connection, and adding, removing files from a folder. UbuntuOne just removed all files from my another machines and never syncronyzed the folder again. When I needed the files at another machine, they weren't there! (neither via web access)

Rename the folder works at both targets, but his content isn't syncronized.

The fix is: move the folder to another place not controlled by UbuntuOne and move it again to U1 folder.

So, it's like U1 just see some magic flag about the folder, without check his content, to decide if is syncronized or not.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: ubuntuone-file-storage-api 0.0.2-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-26.42-generic 3.5.7.6
Uname: Linux 3.5.0-26-generic i686
ApportVersion: 2.6.1-0ubuntu10
Architecture: i386
Date: Thu May 2 15:32:22 2013
InstallationDate: Installed on 2011-03-28 (766 days ago)
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=pt_BR:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntuone-file-storage-api
UpgradeStatus: Upgraded to quantal on 2013-05-02 (0 days ago)