I am not going to tell you how many times my Outlook data is backed up. Okay, I am. As you say, it is synced to my Palm, which I also sync at home and backup to SD card. As well BackupBuddy mirrors my Palm files across our network to another location. The information on my computer and the network location is automatically mirrored to two other locations, and backed up on tape. So that is . . . almost ten copies . . .
I'm not paranoid.