Today I want to give you guys a tip, you will realize that I, probably, will post a lot of topics about virtualization. That's why it's my mainly area these days...so here it is:
What happen if you want to run more VMs than you physical memory allows ? I suppose you are using VMWARE Workstation, ok ?!?
- Go to Edit / Preferences
- on the memory tab set it to allow memory swap
of course your performance would not be the same, but, it's a workaround.
good luck