Where do the 10 or so errors in the System event log without much infor come from? A9E69610-B80D-11D0-B9B9-00A0C922E750 is the application ID for the IIS Admin service, and you probably find an event referencing the fact that you disabled it for securtiy reasons later in the log.
Go to Administrative Tools | Component Services | Computers | My Computers | DCOM config. Right click IIS Admin Service to access properties and set the securitie values to default. Errors go away.
If you find message boxes poping before being able to access this form, I am guessing at this point it is the result of some sort of registry cleanup tool. I am currently concerned about people betting the farm on CCleaner.