ubuntu one sync icon stays forever

The synchronization is over long ago (all the files in the folder are present and marked with a 'V'), but the folder itself is marked as being synchronized for more than 12 hours now.
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Possibly it would be reasonable to add a 'synchronize now' button to Nautilus, for Ubuntu One folders, that would enforce the Ubuntu One client to update its state clearing up stuff like this.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubuntuone-client 3.0.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-45.70-generic 3.2.44
Uname: Linux 3.2.0-45-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.3
Architecture: amd64
Date: Tue Jun 11 10:31:38 2013
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntuone-client
UpgradeStatus: No upgrade log present (probably fresh install)