I have a MacBook Pro with 2GB of RAM. If I start up a single VM with Windows XP SP2 and allocate it 256MB of RAM, eventually watching activity monitor shows that all but about 30MB of my RAM is used up, mostly in "Inactive". Is this perfectly normal, a Parallels issue, or a MacOS X issue? I upgraded to 2GB from 1GB of memory because it seemed that with 1GB when memory was getting tight MacOS X applications started just quitting like crazy.... Safari, Mail, etc. just crash and burn when memory was getting tight and Parallels was running. Referenced below is a screenshot of my Activity Viewer window after having let Parallels run for about five minutes with no other MacOS X apps running (except background tasks like QuickSilver/etc). It's too big to attach, so I linked it. Thanks!