Can I start Ubuntu One synchronization from my 12.10 Ubuntu Desktop on specific time automatically everyday?
Referring to a similar question in Launchpad, it seems there is no official way of doing this.
But, you can always create a CRON job for doing this.
You can use the command-line tool
For eg, you can use:
Say you want to start your synchronization at 3am in the morning and stop at 6am, then in effect you will be creating two CRON job entries.