I'd thought I share an important find with Time Machine. If you use VMWare Fusion or Parallels, it's important you exclude your Virtual Machines directory or some weird stuff can happen with Time Machine. First off, the slightest change (which basically means using a VM) causes Time Machine to rebackup the entire VM. So, if you use your VM once a day, every day Time Machine will backup the entire VM image, thus wasting valuable space on the Time Machine drive. Second, if Time Machine is backing up your VM when you try to use it, at least with Fusion, the entire VM session crashes. I'm not sure if the same thing occurs in Parallels or with the latest Fusion beta, but it's something to think of. Just thought I'd share my finds. Hope this helps someone.