What luck. My server went down last night and didn't come back up until this morning. I eventually had to request a power cycle from my host and then remote desktop in to see what went wrong.
The root cause of the error was this:
The application-specific permission settings do not grant Local Activation permission for the COM Server application with CLSID ...... to the user NT AUTHORITY\NETWORK SERVICE.
This caused a few other errors to occur in rapid succession and Windows decided to shut down my application pool. You can clearly see the issue here:
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I read up on the error and found a solution. Apparently after Server 2003 SP1 came out, this issue started appearing on servers with a specific Group Policy (I'm not sure what). They suggested to add NETWORK SERVICE to the DCOM Users group.
So far it is working fine. We'll see!
I wonder how much
google juice I lost during the 12 hour outage. :(