I have just installed Windows XP with VMWare Fusion (2.0.6) and every time I shut down VMWare and check the size of the virtual machine back in Finder in OS X (Snow Leopard) it has grown by 2GB or so. Why is it doing this and how can I stop it? (It's now 8GB+ even though there is no software installed on the Windows side). I am running these on a late 2007 iMac. Thanks!