I have a new iMac that backs up regularly with Time Machine. I find that the Time Machine backups are for more data than my iMac hard drive changes. For example, yesterday it did three backups that I noticed. One was for about 300MB and the other for about 700MB and one for 2 MB. Right now it is doing a 1GB backup. The only changes I did to the iMac between yesterday and today were a few e-mail downloads (not more than 2MB) and a few pictures were imported (about 30MB). Does anybody know why Time Machine is backing up so much data when nothing is changing on my Mac? My entire hard drive is about 62GB right now and it started at about 58GB. My Time Capsule hard drive that hosts the TM backups has used about 130GB of data. It had only used about 60GB of data after the initial backup about a month ago. Any thoughts would be appreciated. Thanks.