I often come back to my Mac (running OS 10.9.5) to find the following two messages: "(User's) Boot Camp is using Boot Camp as one of its hard disks. Are you sure you want to suspend this virtual machine? No/Yes" (+ other text); and The application Parallels Desktop canceled logout. Try logging out out again, quit Parallels Desktop and click Try Again. Cancel/Try Again" It could be that PD is not to blame, but it happens when PD is running and when ... ??The Mac is running but the screen has gone dark ??The Mac has gone to sleep ??Time Machine is saving to my Time Capsule I have put question marks because I cannot isolate the issue, but it's around that area. Once the messages have appeared, I can continue working, but the two applications I run in Parallels (MS Word and Trados Studio 2014) no longer appear as separate icons in the "Cmd-Tab" application switcher. Any idea what could be causing this behaviour?