IPSec Service Stops Working

I have 2 2003 servers (1-Standard 1-Enterprise) both of them are Terminal Servers.  On both servers after rebooting I get a message that says one service didn't start.  In the event logs it says IPSec driver has entered Block Mode.  IPSec will discard all inbound and outbound TCP/IP.  When I try to start the IPSec Service I get this message: Could not start the IPSec Services service on local computer.  Error 1899: The endpoint mapper database entry could not be created.

I've tried reloading the OS on both servers but the issue keeps coming back at random times.  A few times it happened after installing Updates, another time it happened while installing Citrix Presentation Server 4.0.  The last time it happened after uninstalling Novell GroupWise 7.

Any ideas on what would cause this to happen on 2 new servers?
zirklefruitAsked:
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zirklefruitConnect With a Mentor Author Commented:
I just figured it out, I changed the RPC service to log on as Local System Account.  Here's the links that I used to figure it out.  Thanks for your help

http://www.itnewsgroups.net/group/microsoft.public.windows.server.general/topic34385.aspx
and http://www.petri.co.il/forums/showthread.php?t=5866
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65tdCommented:
Are there 4292 errors in the system event log?

See this document from MS:

http://support.microsoft.com/kb/912023
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