Bit worrying this one and haven't been able to find anything about how to fix this from a google but all DCOM objects on my DC's are missing. Seems that this is the case since my 2003 server upgrade back in August. I don't think they're gone as nothing would work but do not appear in the window when the DCOM configuration node is selected. Could be cosmetic i suppose but was wondering whether anyone has any idea as to why this may have happened and how to fix it!!?