PDM7 on Macbook Pro Mac OS version: 10.6.8 RAM: 4 GB Running just PDM7 with a Windows XP SP3 VM with 1GB of RAM assigned Other software running on OSX side: Mail, iCal, Adium, Textual (IRC Client). This configuration makes OSX use up all free memory and start paging, you can see the apps running on OSX, besides PDM, are all relatively light. The machine becomes slow to respond, and it makes impossible to launch Safari on OSX. Before launching PDM7 there are 2GB available between Free and Inactive Memory.