Time Machine turned itself OFF - why?
I just discovered that Time Machine has not been working for over a month (I looked at the backup drive and that was the date on the most recent folder.) So I looked at my Time Machine preferences and Time Machine was OFF. I'm pretty sure I didn't do that. I wonder whether it could be caused by my external drive being offline when Time Machine attempted to backup. I've had that sort of problem with other software. Instead of waiting until the drive comes online it turns the option off permanently. If that is the case with Time Machine it is pretty scary. It means that I can't rely on Time Machine. Has anyone else had this experience?
(The very least it could do is send me some sort of alert.)
iMac, Mac OS X (10.5.1), 2.4 GHz Intel Core 2 Duo