This afternoon I installed a few updates in addition to the the Fusion 3 trial. HP Printer Driver Update iPhoto and Safari 4.0.4 updates I keep all my VM's on an external drive, and my free space has only decreased a little (as expected with installing updates). I did not do anything to modify large files (such as renaming iTunes movies etc). Is there anyway to figure out what Time Machine is doing so I can try and pin point what it's actually backing up? And has anyone had anything similar after installing those items? And, is there anyway of removing the last backup? Thanks in advance, Sam.