Hi, I recently upgraded my Mac OSx 10.6.8 from 8 GB of RAM to 16 GB. Prior to this upgrade, I could run two VMs. So I increased each VM from 1 GB to 2 GB of memory. After starting up two VMs, the following message appears when the third VM tries to start: "Parallels Desktop cannot allocate enough memory for running the virtual machine. Suspend or stop one or more of the virtual machines currently running..." Since 2 VMs with a total of 4 GB worked, I decreased each VM to 1 GB each. Yet the same message appeared when the third VM tried to start. When I view the Activity Monitor, it says there is 7.6 GB free memory. So what's the problem? Thanks, Annie