I just upgraded to iOS 5 on my iPad and during the intro session it asks you if you want to "back up to iCloud". Choosing yes, gives the error "There was a problem enabling iCloud Backup". Any ideas?
The iCloud System Status page lists several problems on 13 October.
Others have said they had the same problem, so maybe one of the troubleshooting pages linked from the iCloud Backup Support page might help?
Later: Yes, it does help. this linked page 'iCloud: troubleshooting creating backups' lists specific error messages and says of yours: