USB Hard Drive set up as Time Machine - Unmounts randomly
I recently purchased a Seagate FreeAgent USB 2.0 External Hard Drive which holds 1TB. I plan to use it to backup what's on both my internal 80GB and my external 500GB.
However, lately, throughout the day, the drive seems to unmount itself for no apparent reason. I'm not aware of any log to check this (and if there is one, someone please let me know). Nothing appears to be wrong with the drive itself, it just seems to unmount randomly, it even unmounted whilst I was typing this.
I've tried switching USB ports, turning the device off and back on, and looking up the problem further, but I cannot find out why this is happening.
Can anyone enlighten me?
Mac mini 2.0Ghz C2D, Mac OS X (10.5.5), 2GB RAM 80GB HD, 500GB + 1TB External