DCOM Error event 10016 after sp1

I installed MOSS onto a 2 server farm (DB and WFE), completed the farm and created ssp, mysites and a portal site. At that time I decided to run WSS sp1 and MOSS sp1. Both ran successfully.

However I got a nasty DCOM error in the system log of WFE. I directly navigated to Component Services to enable Local Launch and Local Activation to the IIS WamReg component. That did not do the trick.

Further investigation showed me the error was raised by CLSID 3D42CCB1-4665-4620-92A3-478F47389230, being the microsoft office sharepoint server gathering manager. That one pointed me to AppID 58F1D482-A132-4297-9B8A-F8E4E600CDF6, being OSearch. And that one I found in the Component Services MMC. I gave Local Launch and Local Activation rights to WSS_Admin_WPG on OSearch and my errors (at least these) were gone.