I'm having trouble with my daily backups. I downloaded Déjà Vu to do a daily backup for me at 2:00 every morning - I back up my user folder and my Application folder to an external hard drive. (Déjà Vu's excellent, by the way.) The problem is that now, when I double click (say) a TXT file in the Finder, the TextEdit that opens is the one on the external drive, the backup copy. Since it's going through cables, it's not as fast as the copy on my main hard drive. How can I automatically back up my Applications folder every night so that the system is only aware of my original Applications folder, and doesn't try to open up apps from the external?