Just a heads up to those who use TI for backups. Many may already be aware of this but for those who are not, Vista's System Restore and Shadow Copies can consume a fairly hefty chunk of disk real estate (up to 15%). The larger the drive, the larger the space occupied by these files. Yesterday I had a TI full backup fail for lack of disk space on my external USB drive. Looking at the properties of my C: drive, I was amazed to discover that the used space was reported at over 102GB.

Realizing what the problem was, I immediately ran a disk cleanup and deleted all but the most recent restore point. Used disk space was now reduced to a little over 34GB. I ran TI again and the backup proceeded to completion. It's probably best then for most to run disk cleanup to eliminate the multiple restore points prior to running TI.