New Documents Take Too Long to be Backed Up

When new documents get created on my computer, I expect them to be backed up within an hour or so.  However, Norton Security with Online Backup usually takes 24-48 hours -- sometimes longer -- to create a backup.  I can understand it taking a while if the document size is large, but this happens routinely with documents in the 100-500 KB range, which given my internet connection speed should be uploaded in less than a second. 

The "When" configuration for all backup sets is set to "Automatic", so I assume that it should be looking for new files when the computer is idle and creating the backup fairly quickly, but this is not the case.

I really like the idea of an integrated solution for security and backup, but if there isn't any solution for this inexplicable delay, I will have to go back to CrashPlan.