robin.shaw...@googlemail.com

Just got the same problem too after discovering that update services
in sbs 2003 has installed it as a critical update on 27 March.

Event Type:     Error
Event Source:   Windows SharePoint Services 3
Event Category: Topology
Event ID:       6800
Date:           28/03/2007
Time:           21:01:50
User:           N/A
Computer:       SBS001
Description:
The database SharePoint_AdminContent_87e28dcd-3e40-4d34-b88c-
de20bbfc9507 on SERVER\Microsoft##SSEE is not accessible to missing
Windows Internal Database signatures.