I have LR3 on a Mac running OS 10.6.8. My catalog, cache and images were stored on an external Lacie 1TB drive (partitioned so it can be used by a pc and mac). My catalog backup files were saved on another external drive MXTR as well as copies of all my images. The Lacie had started self ejecting while running LR3 and I thought it was maybe a problem with the cable, as it would work fine after rebooting. Yesterday it crashed LR3 and never remounted. I used Disk Utility to try and repair the disk and it instructed me to erase the disk and start over. I was not worried, since my catalog was backed up to another drive. 10 hours to erase the drive (the drive never quit during this time). Another 2 hours to copy my images from the MXTR to the Lacie (again the drive never self ejected during this time either). So now I go to find my most recent backup catalog. The most recent one I could find was dated 2/09/2012. I am baffled. What happened all those times I was backing up? I upgraded to LR3 in 2011, and I don't remember ever telling it to backup to another folder or drive.
Any ideas as to what the problem may be?