I am also having this problem with RHEL 6.2 It is very annoying getting calls in the middle of the night because a VM was rebooted and never came back......just to find out they only needed to wait 15 mins in between reboots.
There has to be a Fix. Renaming files in over 100 vms doesnt seem like an acceptible solution.
Please respond if anyone finds a better solution.
Thanks