I have two VirtualBox VMs running headless and they run all the time. A third VM (Windows 7 x64) runs on my desktop in the VirtualBox GUI and is sometimes not used for hours or days.
Ever since I upgraded to VirtualBox 4 I find that Windows VM paused when I switch to it.
Any ideas why VirtualBox would pause my VM without me telling it to?
Mac OS X 10.6 Xeon.