Currently Being ModeratedNov 20, 2012 5:40 PM (in response to mknj)
If you are using a mobile device MBP or MBA then the 30GB of backups are system snapshots that are a part of time machine. They are managed so that your hard-drive is never (supposed to be) more than 80% full. If you want to add more files to your drive than OSX will take the difference out of that 30GB.
Here is a link explaining snapshots in more detail. There are also instructions to turn snapshots on/off: Click Here
Currently Being ModeratedNov 20, 2012 5:41 PM (in response to Keyfox11)
You should not need to clean out the files. They will be auto deleted. I have over 200 gigs on my drive...
Currently Being ModeratedNov 21, 2012 6:30 AM (in response to mknj)
I am using a Macbook- so is there any way to get rid of some backups there?
Currently Being ModeratedNov 21, 2012 12:18 PM (in response to mknj)
If you turn off local snapshots by using the "sudo tmutil disablelocal" in the terminal and then backup your macbook with Time Machine they should disappear within a week. There is realy no need to delete them though. They will auto delete.