I have my Time Machine hooked up to a Time Capsule and it seems that Time Machine is backing up an excessive amount of data throughout the day. Normally the backups are just 5-10 MB, however it seems that once or twice a day it backs up 2-3 GB worth of data. I don't do much saving/creating/modifying of files during the day...just web-based programs, iTunes (no downloads), etc. Thoughts?