I've encountered this problem about a half dozen times now in the past month: I suspend a running Windows 7 VM, the screen grays out and "Suspending..." comes up but the spinning circle beside it never display a progress indicator and, instead, it just hangs like this indefinitely, until I finally kill the process. Has anyone else encountered this problem or knows how to resolve it? I've routinely suspended my development VMs because shutting the instance itself down and booting it up again is immensely time consuming. Of course, rebooting from a hard crash is an even worse solution.