[ovirt-users] Ubuntu guest doesn't reboot properly

I have an Ubuntu 14.04 guest (actually Zentyal server). Guest additions are installed from respository (and even displays the extra info like IP address, host name, memory use) in the oVirt dash board. Whenever I either reboot the guest or shut it down, it never seems to come up properly. It shows that it is powered on and it responds to ping, but I cannot SSH in (says connection refused). The SPICE console display just shows black with some slightly coloured bars in the upper left of the screen, so I am unable to determine what stage of the boot process it is on and/or if it is even at a login screen. I have a Windows 7 guest VM that reboots with no issue. I currently do not have another Linux guest VM to test with, but I plan on installing a Debian guest, CentOS guest, as well as a "vanilla" Ubuntu 14.04 guest to see if it is a Linux thing, and Ubuntu thing, or just something odd with the Zentyal spin of Ubuntu. I will report on my results (it may take a bit), but I wanted to check here to see if anyone else has already troubleshot this and what the findings and conclusions were? Thanks! :-) -Alan