Vista - Virtual Server Service is getting disabled

I installed Virtual Server 2005 R2 SP1 with KB948515. Things are mostly fine
except for two glitches. After several hours, the Virutal Server and Virtual
Machine Helper services get marked "Disabled" as viewed in the Control Panel
-> services applet. A "SC QUERY "VIRTUAL SERVER"" command also shows the
service is marked disabled.

If I re-enable the service, they start fine except for the 2nd problem: THe
running VMs are not restarted along with VS. The options for marking the VMs
as "start with VS" are disabled in the web interface.

Is there another configuraiton setting I'm missing? Is there a way to mark
the VMs as "Restart"? The grayed-out options read
Action When Virutal Server Stops: "Shut Down Guest OS" and this is happening.
Action WHen Virtual Server Starts: "Automatcially turn onvirtual machine if
it was running when Virtual Server stopped." and this is NOT happening.

Any help appreciated as this is a show-stopper problem for using VS.

Output of "sc query"



SERVICE_NAME: vmh
TYPE : 10 WIN32_OWN_PROCESS
START_TYPE : 4 DISABLED <-----------------------
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : "C:\Program Files\Microsoft Virtual
Server\vmh.exe" -service
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : Virtual Machine Helper
DEPENDENCIES :
SERVICE_START_NAME : LocalSystem
[SC] QueryServiceConfig SUCCESS

SERVICE_NAME: virtual server
TYPE : 10 WIN32_OWN_PROCESS
START_TYPE : 4 DISABLED <-----------------------
ERROR_CONTROL : 1 NORMAL
BINARY_PATH_NAME : "C:\Program Files\Microsoft Virtual
Server\vssrvc.exe"
LOAD_ORDER_GROUP :
TAG : 0
DISPLAY_NAME : Virtual Server
DEPENDENCIES : RpcSs
: vmh
: vmm
SERVICE_START_NAME : LocalSystem
[SC] QueryServiceConfig SUCCESS