I don't know what it is up to; is this a common issue this am, or am I to be worried abut what suddenly needs so much synching since I went to bed?
It's happening for me too. It's automatically retrying to sync after failing. When it fails I see a warning icon and if I hover over it I get a tool tip that says: "An error occurred during synchronization, click to try again."
You can safely ignore it, but your documents etc. won't be synced on other machines until it succeeds.
It is an issue with the Logos servers. Usually it is remedied rather quickly.
They are apparently having problems with the sync server this morning.
EDIT: John and I were posting at the same time. He is right in saying they usually get these issues resolved quickly