event id 10006 - DCOM got error "Class not registered " from the computer

I'm getting a ton of event id 10006 errors on various computer on my network.  All workstations are running Windows XP Pro.  The errors are being posted in the system log.  Below is the full message.

Event Type:      Error
Event Source:      DCOM
Event Category:      None
Event ID:      10006
Date:            3/24/2006
Time:            10:22:20 AM
User:            DOMAIN\user
Computer:      pc9898
DCOM got error "Class not registered " from the computer pc9898 when attempting to activate the server:

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.\

What should I do?

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Found this suggestion from EventID.net

Server: 5A5AA0AA-1DEB-4683-96B0-B43301E83971. In my case, I searched the registry for this value. It appeared under a HP Port locator key. A printer that was removed from the server was still installed on the workstation that was producing the error. I killed the HP monitoring and the error that was recurring every minute, then stopped. I removed the printer from the Printers folder that was no longer valid, restarted the HP Port locator software, and the error did not appear again.

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gopher_49Author Commented:
I fixed it.  This workstation has a hp 1012 plugged into it.  It was running the HP Toolkit software.  We have a group policy that prevents access to drive C:.  Applications work, however, they cannot save files to drive C:.  We also redirect their My Documents folder to their home directory on the server.  This voids users accidentally saving files to their local hard disk and then deleting them.  Anyway, The HP Toolkit software didn't like this configuration.  Once I uninstalled it the DCOM errors went away and the user quit receiving the 'End Now' window that was being prompted when they logged off.  

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