Whenever I use Windows through VMWare Fusion, my time machine always backs up approximately 512 megabytes at the next scheduled backup (even if I don't modify any files). I think I understand that basically it can't differentiate changes within the file, thus backing up the whole thing, but, how can I prevent this from happening (several times a day it is backing up 512 megabytes, so soon I will run out of space on my external hard drive). I'm assuming that the 512 megabytes is no coincidence given its the amount of virtual memory I have allocated to VMWare Fusion (seen under settings). I've searched through all of the forums on this issue, but since I am using VMWare Fusion to boot a BootCamp partition, there was never any .vmdk file created in my Documents folder that I can exclude. My question is - what file do I exclude to prevent Time Machine from backing this up?