Prompted by a thread on the Pixi board I decided to check my backups on my Pre3 and noticed that they had not run since 22/6/13.
I ran the backup manually and it didn't seem to do anything (after a long time preparing).
I rebooted the phone and ran the backup again, this time preparing was quick and I saw it starting to run the backup but the next time I looked it was back on the top screen and insisted the last backup was the 22nd.
Something seems to be up with backups. Has anyone else noticed this problem or is it just me?