I have a Time Capsule and Time Machine on MacBook regularly backs up between 1MB and 5GB of data every hour, depending on how much data I change/delete/add to my hard drive. Over the last few days, it has tried to backup 150GB, 90GB, and 220GB, despite the fact that I'm not doing anything other than surfing the web and checking my email. The total amount of used hard drive space on my Mac is 330GB, so I suspect that Time Machine is running into a bug when it calculates what needs to be backed up. Worse yet, I see that the amount of free space on my Time Capsule hard drive is shooting up, meaning that somewhere on the disk, backups are getting deleted and I'm not being notified, even though "Notify after old backups are deleted" is checked off in the Time Machine preference pane in System Preferences. I'm running 10.6.3 any suggestions?