What happens if I edit a file on my desktop PC, and edit the same file on my synchronised laptop which is currently not connected to the internet?
Let's say I have a file called "jobs.todo" in "~/Ubuntu One" on my desktop, and this contains the following:
Job 1: description
Job 2: description
Job 3: description
As I have my laptop connected to the internet, this file will appear on both computers.
I disconnect my laptop, and take it away with me on a journey. While I'm away, I think of another job I have to get done and add it to the file, which will now read:
Job 1: description
Job 2: description
Job 3: description
Job 4: description
When I get home, I go back to my desktop and think of something else I need to get done, so I add this to the desktop computer's "jobs.todo" file, forgetting that I'd already altered this file on the laptop.
This file will read:
Job 1: description
Job 2: description
Job 3: description
Job 5: description
and the file will be synchronised with the cloud soon afterwards, because the desktop machine is connected to the internet.
Some while later, I start up my laptop, it connects itself to the internet wirelessly, and synchronisation with the cloud takes place.
I suspect that the desktop version (with Job 5 in it) will be copied from the cloud, and I will lose the file containing Job 4, because the datestamp on the cloud's version of the file will be later than that on the laptop