Two Win8.1 Pro PCs; the first one (updated from windows store) sync all files correctly

The second one can't upload any file! (installed from the win8.1 MSDN ISO file)

I already have all files in the skydrive folder (d:\andrea\skydrive) and the metro app shows me "11062 files to upload". That's not true, because all those files are already present on the cloud storage. 

However, it is freezed in that state. I tried to "flag all files for offline access", kill and reopen the skydrive process, restart etc... 

cpu usage for skydrive.exe is pretty high (intel core duo e 6600, full usage of one core). I tried to leave the pc "working" for an entire day, but that doesn't solved the problem.

Here logs file from AppData\Local\Microsoft\Windows\SkyDrive\logs: http://sdrv.ms/HbV71N